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WISFLORA: Vascular Plant Species

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County: Ashland

Family: Aceraceae
  Genus: Acer
    Acer negundo L. var. negundo +
        box elder
             Negundo aceroides (L.) Moench
             Negundo negundo (L.) Karst.
    Acer nigrum F.Michx.*+
        black maple
             Acer nigrum F.Michx. var. palmeri Sarg.
             Acer saccharum Marshall subsp. nigrum
             Acer saccharum Marshall var. nigrum (F.Michx.) Britton
             Acer saccharum Marshall var. viride (Schmidt) E.Murray
             Saccharodendron nigrum (F.Michx.) Small
    Acer platanoides L.*+
        Norway maple
             Acer platanoides L. var. schwedleri Nichols.
    Acer rubrum L. var. rubrum *+
        red maple
             Acer rubrum L. f. tomentosum (Desf.) Dans.
             Acer rubrum L. var. tomentosum Tausch
             Acer stenocarpum Britton
             Rufacer rubrum (L.) Small
    Acer saccharinum L.*+
        silver maple, soft maple
             Acer dasycarpum Ehrh.
             Acer saccharinum L. f. ahlesii A.Murray
             Acer saccharinum L. var. laciniatum Pax
             Acer saccharinum L. var. wieri Rehder
             Argentacer saccharinum (L.) Small
    Acer saccharum Marshall var. saccharum *+
        hard maple, sugar maple
             Acer nigrum F.Michx. var. glaucum (F.Schmidt) Fosberg
             Acer nigrum F.Michx. var. saccharophorum (K.Koch) R.T.Clausen
             Acer saccharinum Wangenh. var. glaucum F.Schmidt
             Acer saccharum Marshall f. glaucum (F.Schmidt) Pax
             Acer saccharum Marshall subsp. saccharum
             Acer saccharum Marshall var. glaucum (F.Schmidt) Sarg.
             Acer saccharophorum K.Koch
             Saccharodendron saccharum (Marshall) Moldenke
    Acer spicatum Lam.*+
        mountain maple
Family: Acoraceae
  Genus: Acorus
    Acorus americanus (Raf.) Raf.*
        sweet-flag
             Acorus calamus auct. non L.
             Acorus calamus L. var. americanus (Raf.) H.Wulff
             Acorus calamus L. var. americanus Raf.
    Acorus calamus L.*+
        sweet-flag
             Acorus americanus auct. non (Raf.) Raf.
             Acorus calamus L. var. americanus auct. non (Raf.) Raf.
Family: Agavaceae
Family: Alismataceae
  Genus: Alisma
    Alisma triviale Pursh*+
        northern water-plantain
             Alisma brevipes Greene
             Alisma plantago-aquatica L. subsp. brevipes
             Alisma plantago-aquatica L. var. americanum Schult.
             Alisma plantago-aquatica L. var. brevipes (Greene) Vict.
  Genus: Sagittaria
    Sagittaria cuneata E.Sheld.*+
        arum-leaved arrowhead, northern arrowhead, wapato
             Sagittaria arifolia Nutt. ex J.G.Sm.
    Sagittaria latifolia Willd.*+
        broad-leaved arrowhead, common arrowhead, duck-potato, wapato
             Sagittaria chinensis Pursh
             Sagittaria esculenta T.J.Howell
             Sagittaria latifolia Willd. f. gracilis (Pursh) B.L.Rob.
             Sagittaria latifolia Willd. f. hastata (Pursh) B.L.Rob.
             Sagittaria latifolia Willd. var. latifolia
             Sagittaria latifolia Willd. var. obtusa (Muhl. ex Willd.) Wiegand
             Sagittaria latifolia Willd. var. pubescens (Muhl. ex Nutt.) J.G.Sm.
             Sagittaria obtusa Muhl. ex Willd., non Thunb.
             Sagittaria ornithorhyncha Small
             Sagittaria planipes Fernald
             Sagittaria variabilis Engelm. var. obtusa (Muhl. ex Willd.) Engelm.
             Sagittaria viscosa C.Mohr, pro parte
    Sagittaria rigida Pursh*+
        sessile-fruited arrowhead, stiff arrowhead
             Sagittaria heterophylla Pursh
             Sagittaria heterophylla Pursh f. elliptica (Engelm.) S.F.Blake
             Sagittaria heterophylla Pursh f. fluitans (Engelm.) S.F.Blake
             Sagittaria heterophylla Pursh f. rigida (Pursh) S.F.Blake
             Sagittaria rigida Pursh f. elliptica (Engelm.) Fernald
             Sagittaria rigida Pursh f. fluitans (Engelm.) Fernald
Family: Anacardiaceae
  Genus: Rhus
    Rhus hirta (L.) Sudw.*+
        staghorn sumac, velvet sumac
             Datisca hirta L.
             Rhus typhina L.
             Rhus typhina L. f. dissecta Rehder
             Rhus typhina L. var. laciniata A.W.Wood
    Rhus X pulvinata Greene (pro sp.) X +
        hybrid sumac, northern sumac, pulvinate sumac
             Rhus glabra L. var. borealis Britton
             Rhus pulvinata Greene
             Rhus X borealis (Britton) Gleason (emended) X
  Genus: Toxicodendron
    Toxicodendron radicans (L.) Kuntze subsp. negundo*+
        common eastern poison-ivy, poison-ivy
             Toxicodendron negundo Greene
             Toxicodendron radicans (L.) Kuntze var. negundo (Greene) Reveal
    Toxicodendron rydbergii (Small ex Rydb.) Greene*+
        Rydberg's poison-ivy, western poison-ivy
             Rhus radicans L. var. rydbergii (Small ex Rydb.) Rehder
             Rhus radicans L. var. vulgaris (Michx.) DC.
             Rhus rydbergii Small ex Rydb. (pro parte)
             Rhus toxicodendron L. var. vulgaris Michx.
             Toxicodendron desertorum Lunell
             Toxicodendron fothergilloides Lunell
             Toxicodendron radicans (L.) Kuntze var. rydbergii (Small ex Rydb.) Erskine
Family: Apiaceae
  Genus: Angelica
    Angelica atropurpurea L.*+
        common great angelica, great angelica, purple-stem angelica
  Genus: Carum
    Carum carvi L.*+
        caraway
             Carum velenovskyi Rohlena
  Genus: Cicuta
    Cicuta bulbifera L.*+
        bulblet water-hemlock
    Cicuta maculata L.*+
        common water-hemlock, spotted water-hemlock
  Genus: Cryptotaenia
    Cryptotaenia canadensis (L.) DC.*+
        Canadian honewort, white chervil
             Deringa canadensis (L.) Kuntze
  Genus: Daucus
    Daucus carota L.*+
        Queen Anne's-lace, wild carrot
             Daucus carota L. f. epurpuratus Farw.
  Genus: Heracleum
    Heracleum lanatum Michx.*+
        American cow-parsnip
             Heracleum maximum W.Bartram
             Heracleum sphondylium L. subsp. montanum
             Heracleum sphondylium L. var. lanatum (Michx.) Dorn
  Genus: Hydrocotyle
    Hydrocotyle americana L.*+
        American marsh pennywort, marsh pennywort
  Genus: Osmorhiza
    Osmorhiza berteroi DC.*+
        Chilean sweet cicely, tapering sweet-root
             Osmorhiza chilensis Hook. & Arn.
             Osmorhiza divaricata (Britton) Suksd.
             Osmorhiza nuda Torr.
             Washingtonia divaricata Britton
    Osmorhiza claytonii (Michx.) C.B.Clarke*+
        bland sweet cicely, Clayton's sweet-root, hairy sweet cicely
             Myrrhis claytonii Michx.
             Osmorhiza aristata (Thunb.) Makino var. brevistylis (DC.) B.Boivin
             Osmorhiza brevistylis DC.
             Washingtonia claytonii (Michx.) Britton
    Osmorhiza longistylis (Torr.) DC.*+
        anise-root, long-styled sweet cicely, long-styled sweet-root, smooth sweet cicely
             Myrrhis longistylis Torr.
             Osmorhiza aristata (Thunb.) Makino var. longistylis (Torr.) B.Boivin
             Osmorhiza longistylis (Torr.) DC. var. brachycoma S.F.Blake
             Osmorhiza longistylis (Torr.) DC. var. imbarbata Salamun
             Osmorhiza longistylis (Torr.) DC. var. villicaulis Fernald
             Washingtonia longistylis (Torr.) Britton
  Genus: Pastinaca
    Pastinaca sativa L.*+
        wild parsnip
  Genus: Sanicula
    Sanicula canadensis L.+
        Canadian black snakeroot, Canadian sanicle
             Sanicula canadensis L. var. grandis Fernald
    Sanicula gregaria E.P.Bicknell*+
        clustered black snakeroot
             Sanicula odorata (Raf.) K.M.Pryer & L.R.Phillippe
             Triclinium odoratum Raf.
    Sanicula marilandica L.*+
        black snakeroot, Maryland sanicle
             Sanicula marilandica L. var. petiolulata Fernald
  Genus: Sium
    Sium suave Walter*+
        hemlock water-parsnip, water-parsnip
             Sium cicutaefolium Schrank
             Sium floridanum Small
             Sium suave Walter var. floridanum (Small) C.F.Reed
  Genus: Zizia
    Zizia aurea (L.) W.D.J.Koch*+
        common golden alexanders, golden alexanders, golden zizia
             Smyrnium aureum L.
Family: Apocynaceae
  Genus: Apocynum
    Apocynum androsaemifolium L.*+
        spreading dogbane
             Apocynum androsaemifolium L. var. incanum A.DC. subsp. androsaemifolium
             Apocynum pumilum (A.Gray) Greene var. rhomboideum (Greene) Bég. & Bél.
             Apocynum scopulorum Greene ex Rydb.
    Apocynum cannabinum L.*+
        hemp-dogbane, Indian hemp
             Apocynum album Greene var. hypericifolium A.Gray
             Apocynum cannabinum L. var. angustifolium (Wooton) N.H.Holmgren
             Apocynum cannabinum L. var. glaberrimum A.DC.
             Apocynum cannabinum L. var. greeneanum (Bég. & Bél.) Woodson
             Apocynum cannabinum L. var. nemorale (G.S.Mill.) Fernald
             Apocynum cannabinum L. var. pubescens (Mitch. ex R.Br.) A.DC.
             Apocynum cannabinum L. var. suksdorfii (Greene) Bég. & Bél.
             Apocynum pubescens Mitch. ex R.Br.
             Apocynum suksdorfii Greene
             Apocynum suksdorfii Greene var. angustifolium (Wooton) Woodson
    Apocynum sibiricum Jacq.*+
        clasping dogbane, Indian hemp
             Apocynum cannabinum L. var. hypericifolium (Aiton) A.Gray
             Apocynum hypericifolium Aiton
             Apocynum sibiricum Jacq. var. cordigerum (Greene) Fernald
             Apocynum sibiricum Jacq. var. farwellii (Greene) Fernald
             Apocynum sibiricum Jacq. var. salignum (Greene) Fernald
    Apocynum X floribundum Greene (pro sp.) X +
        hybrid dogbane, intermediate dogbane
             Apocynum jonesii Woodson
             Apocynum medium Greene
             Apocynum medium Greene var. floribundum (Greene) Woodson
             Apocynum medium Greene var. leuconeuron (Greene) Woodson
             Apocynum medium Greene var. lividum (Greene) Woodson
             Apocynum medium Greene var. sarniense (Greene) Woodson
             Apocynum medium Greene var. vestitum (Greene) Woodson
             Apocynum milleri Britton
  Genus: Vinca
    Vinca minor L.*+
        greater periwinkle, periwinkle, running-myrtle
Family: Aquifoliaceae
  Genus: Ilex
    Ilex mucronata (L.) M.Powell, V.Savolainen & S.Andrews*+
        cat-berry, mountain holly
             Nemopanthus mucronatus (L.) Loes.
             Vaccinium mucronatum L.
    Ilex verticillata (L.) A.Gray*+
        common winterberry
             Ilex bronxensis Britton
             Ilex fastigiata E.P.Bicknell
             Ilex verticillata (L.) A.Gray subsp. tenuifolia
             Ilex verticillata (L.) A.Gray var. cyclophylla B.L.Rob.
             Ilex verticillata (L.) A.Gray var. fastigiata (E.P.Bicknell) Fernald
             Ilex verticillata (L.) A.Gray var. padifolia (Willd.) Torr. & A.Gray ex S.Watson
             Ilex verticillata (L.) A.Gray var. tenuifolia (Torr.) S.Watson
             Ilex verticillata (L.) A.Gray var. verticillata
             Prinos padifolius Willd.
             Prinos verticillatus L.
             Prinos verticillatus L. var. tenuifolius Torr.
Family: Araceae
  Genus: Arisaema
    Arisaema triphyllum (L.) Schott subsp. triphyllum*+
        Indian turnip, Jack-in-the-pulpit
             Arisaema atrorubens (Aiton) Blume
             Arisaema atrorubens (Aiton) Blume f. viride (Engl.) Fernald
             Arisaema atrorubens (Aiton) Blume f. zebrinum (Sims.) Fernald
             Arisaema triphyllum (L.) Schott f. viride (Engl.) Farw.
             Arisaema triphyllum (L.) Schott var. triphyllum
  Genus: Calla
    Calla palustris L.*+
        water-arum, wild calla
Family: Araliaceae
  Genus: Aralia
    Aralia hispida Vent.*+
        bristly sarsaparilla
    Aralia nudicaulis L.*+
        wild sarsaparilla
    Aralia racemosa L.*+
        American spikenard, life-of-man
             Aralia racemosa L. subsp. racemosa
  Genus: Panax
    Panax trifolius L.*+
        dwarf ginseng, groundnut
Family: Aristolochiaceae
  Genus: Asarum
    Asarum canadense L.*+
        Canadian wild-ginger, wild-ginger
             Asarum acuminatum (Ashe) E.P.Bicknell
             Asarum canadense L. var. acuminatum Ashe
             Asarum canadense L. f. prattii Fassett var. acuminatum Ashe
             Asarum canadense L. var. ambiguum (E.P.Bicknell) Farw.
             Asarum canadense L. var. canadense
             Asarum canadense L. var. reflexum (E.P.Bicknell) B.L.Rob.
             Asarum reflexum E.P.Bicknell
             Asarum reflexum E.P.Bicknell var. ambiguum E.P.Bicknell
             Asarum rubrocinctum Peattie
Family: Asclepiadaceae
  Genus: Asclepias
    Asclepias exaltata L.*+
        poke milkweed, tall milkweed
             Asclepias bicknellii Vail
             Asclepias phytolaccoides Pursh
    Asclepias incarnata L. subsp. incarnata*+
        swamp milkweed
             Asclepias incarnata L. var. incarnata
    Asclepias syriaca L.*+
        common milkweed, silkweed
             Asclepias intermedia Vail
             Asclepias kansana Vail
             Asclepias syriaca L. var. kansana (Vail) E.J.Palmer & Steyerm.
Family: Aspleniaceae
  Genus: Asplenium
    Asplenium rhizophyllum L.*+
        walking fern
             Camptosorus rhizophyllus (L.) Link
    Asplenium trichomanes L. subsp. trichomanes+
        maidenhair spleenwort
             Asplenium melanocaulon Willd.
Family: Asteraceae
  Genus: Achillea
    Achillea millefolium L.*+
        common yarrow, milfoil
    Achillea millefolium L. subsp. lanulosa+
        common yarrow, milfoil
             Achillea angustissima Rydb.
             Achillea aspleniifolia auct. non Vent.
             Achillea eradiata Piper
             Achillea gracilis Raf.
             Achillea lanulosa Nutt.
             Achillea lanulosa Nutt. f. peroutkyi F.C.Seymour
             Achillea lanulosa Nutt. f. rubicunda Farw.
             Achillea lanulosa Nutt. subsp. typica
             Achillea lanulosa Nutt. var. arachnoidea Lunell
             Achillea lanulosa Nutt. var. eradiata (Piper) M.Peck
             Achillea laxiflora Pollard & Cockerell
             Achillea millefolium L. f. rubicunda Farw. subsp. lanulosa
             Achillea millefolium L. subsp. occidentalis
             Achillea millefolium L. subsp. pallidotegula
             Achillea millefolium L. var. aspleniifolia (Vent.) Farw.
             Achillea millefolium L. var. gracilis Raf. ex DC.
             Achillea millefolium L. var. lanulosa (Nutt.) Piper
             Achillea millefolium L. var. occidentalis DC.
             Achillea millefolium L. var. rosea (Desf.) Torr. & A.Gray
             Achillea millefolium L. var. russeolata B.Boivin
             Achillea occidentalis (DC.) Raf. ex Rydb.
             Achillea rosea Desf.
             Achillea tomentosa Pursh, non L.
    Achillea millefolium L. subsp. millefolium+
        common yarrow, milfoil
             Achillea millefolium L. var. millefolium
    Achillea ptarmica L.*+
        sneezeweed, sneezewort
  Genus: Ambrosia
    Ambrosia artemisiifolia L.*+
        annual bur-sage, common ragweed, short ragweed
             Ambrosia artemisiifolia L. var. elatior (L.) Descourt.
             Ambrosia artemisiifolia L. f. villosa Fernald & Griscom var. elatior (L.) Descourt.
             Ambrosia elatior L.
             Ambrosia media Rydb.
    Ambrosia psilostachya DC.*+
        perennial ragweed, western ragweed
             Ambrosia californica Rydb.
             Ambrosia coronopifolia Torr. & A.Gray
             Ambrosia coronopifolia Torr. & A.Gray var. asperula A.Gray
             Ambrosia coronopifolia Torr. & A.Gray var. gracilis A.Gray
             Ambrosia cumanensis Kunth
             Ambrosia lindheimeriana Scheele
             Ambrosia psilostachya DC. var. californica (Rydb.) S.F.Blake
             Ambrosia psilostachya DC. var. coronopifolia (Torr. & A.Gray) Farw. ex Fernald
             Ambrosia psilostachya DC. var. lindheimeriana (Scheele) Blank.
             Ambrosia rugelii Rydb.
    Ambrosia trifida L. var. trifida *+
        giant ragweed, great ragweed, horse-cane
             Ambrosia integrifolia Muhl. ex Willd.
             Ambrosia striata Rydb.
             Ambrosia trifida L. var. integrifolia (Muhl. ex Willd.) Torr. & A.Gray
             Ambrosia variabilis Rydb.
  Genus: Anaphalis
    Anaphalis margaritacea (L.) Benth. & Hook.f.*+
        pearly everlasting, western pearly everlasting
             Anaphalis margaritacea (L.) Benth. & Hook.f. subsp. angustior
             Anaphalis margaritacea (L.) Benth. & Hook.f. var. angustior (Miq.) Nakai
             Anaphalis margaritacea (L.) Benth. & Hook.f. var. intercedens Hara
             Anaphalis margaritacea (L.) Benth. & Hook.f. var. occidentalis Greene
             Anaphalis margaritacea (L.) Benth. & Hook.f. var. revoluta Suksd.
             Anaphalis margaritacea (L.) Benth. & Hook.f. var. subalpina A.Gray
             Anaphalis occidentalis (Greene) Heller
             Antennaria cinnamomea C.B.Clarke var. angustior Miq.
             Gnaphalium margaritaceum L.
  Genus: Antennaria
    Antennaria howellii Greene subsp. canadensis+
        Canadian pussy-toes, Howell's pussy-toes
             Antennaria canadensis Greene
             Antennaria canadensis Greene var. randii Fernald
             Antennaria canadensis Greene var. spathulata Fernald
             Antennaria carpathica Greene
             Antennaria neglecta Greene var. canadensis (Greene) Cronquist
             Antennaria neglecta Greene var. randii (Fernald) Cronquist
             Antennaria neodioica Greene subsp. canadensis
             Antennaria neodioica Greene var. randii (Fernald) B.Boivin
             Antennaria randii Fernald
             Antennaria spathulata (Fernald) Fernald
             Antennaria wiegandii Fernald
    Antennaria howellii Greene subsp. neodioica+
        field pussy-toes, Howell's pussy-toes
             Antennaria neglecta Greene var. attenuata (Fernald) Cronquist
             Antennaria neglecta Greene var. neodioica (Greene) Cronquist
             Antennaria neodioica Greene
             Antennaria neodioica Greene subsp. neodioica
             Antennaria neodioica Greene var. attenuata Fernald
             Antennaria neodioica Greene var. chlorophylla Fernald
             Antennaria neodioica Greene var. grandis Fernald
             Antennaria neodioica Greene var. interjecta Fernald
             Antennaria neodioica Greene var. typica Fernald
             Antennaria rhodantha Fernald
             Antennaria rupicola Fernald
             Antennaria russellii B.Boivin
    Antennaria howellii Greene subsp. petaloidea+
        Howell's pussy-toes, small pussy-toes
             Antennaria appendiculata Fernald
             Antennaria concolor Piper
             Antennaria neglecta Greene var. petaloidea (Fernald) Cronquist
             Antennaria neglecta Greene var. subcorymbosa Fernald
             Antennaria neodioica Greene subsp. petaloidea
             Antennaria neodioica Greene var. petaloidea Fernald
             Antennaria petaloidea Fernald
             Antennaria petaloidea (Fernald) Fernald var. noveboracensis Fernald
             Antennaria petaloidea (Fernald) Fernald var. scariosa Fernald
             Antennaria petaloidea (Fernald) Fernald var. subcorymbosa (Fernald) Fernald
             Antennaria stenolepis Greene
    Antennaria neglecta Greene*+
        cat's-foot, field pussy-toes
             Antennaria angustiarum Lunell
             Antennaria athabascensis Greene
             Antennaria campestris Rydb.
             Antennaria campestris Rydb. var. athabascensis (Greene) B.Boivin
             Antennaria chelonica Lunell
             Antennaria erosa Greene
             Antennaria howellii Greene var. athabascensis (Greene) B.Boivin
             Antennaria howellii Greene var. campestris (Rydb.) B.Boivin
             Antennaria longifolia Greene
             Antennaria lunellii Greene
             Antennaria nebraskensis Greene
             Antennaria neglecta Greene var. athabascensis (Greene) Roy L.Taylor & MacBryde
             Antennaria neglecta Greene var. campestris (Rydb.) Steyerm.
             Antennaria neglecta Greene var. neglecta
             Antennaria parvula Greene
             Antennaria wilsonii Greene
    Antennaria parlinii Fernald subsp. fallax+
        Parlin's pussy-toes, plantain pussy-toes
             Antennaria ambigens (Greene) Fernald
             Antennaria ampla Bush
             Antennaria arkansana Greene
             Antennaria arnoglossa Greene var. ambigens Greene
             Antennaria bifrons Greene
             Antennaria brainerdii Greene
             Antennaria calophylla Greene
             Antennaria fallax Greene
             Antennaria fallax Greene var. calophylla (Greene) Fernald
             Antennaria farwellii Greene
             Antennaria greenei Bush
             Antennaria mesochora Greene
             Antennaria munda Fernald
             Antennaria obovata E.E.Nelson
             Antennaria occidentalis Greene
             Antennaria parlinii Fernald var. ambigens (Greene) Fernald
             Antennaria parlinii Fernald var. farwellii (Greene) B.Boivin
             Antennaria plantaginifolia (L.) Richardson var. ambigens (Greene) Cronquist
             Antennaria umbellata Greene
  Genus: Anthemis
    Anthemis cotula L.*+
        dog-fennel, mayweed, stinking chamomile, stinking-cotula
             Maruta cotula (L.) DC.
  Genus: Arctium
    Arctium lappa L.*+
        great burdock
             Lappa major Gaertn.
    Arctium minus Bernh.*+
        common burdock, lesser burdock
             Arctium minus Bernh. f. laciniatum Clute
             Lappa minor Hill
    Arctium tomentosum Mill.+
        cotton burdock, hairy burdock, woolly burdock
  Genus: Artemisia
    Artemisia absinthium L.+
        absinth sage-wort, absinth wormwood, absinthe, common wormwood, sage-wort
    Artemisia biennis Willd.*+
        biennial sage-wort, biennial wormwood
    Artemisia campestris L. subsp. caudata*+
        field sage-wort, field wormwood
             Artemisia campestris L. var. caudata (Michx.) E.J.Palmer & Steyerm.
             Artemisia caudata Michx.
             Artemisia caudata Michx. var. calvens Lunell
             Artemisia forwoodii S.Watson
             Oligosporus campestris (L.) Cass. subsp. caudatus
  Genus: Aster
    Aster borealis (Torr. & A.Gray) Prov.*+
        northern bog aster, rush aster
             Aster franklinianus Rydb.
             Aster junceus auct. non Aiton
             Aster junciformis Rydb.
             Aster laxifolius Lindl. var. borealis Torr. & A.Gray
             Aster laxifolius Nees var. laetiflorus Torr. & A.Gray
             Symphyotrichum boreale (Torr. & A.Gray) A.Löve & D.Löve
    Aster borealis (Torr. & A.Gray) Prov. var. X A. lanceolatus Willd. var. simplex (Willd.) A.G.Jones+
             Aster borealis (Torr. & A.Gray) Prov. X A. simplex Willd.
    Aster ciliolatus Lindl.*+
        Lindley's aster, northern heart-leaved aster
             Aster ciliolatus Lindl. var. ciliolatus
             Aster lindleyanus Torr. & A.Gray
             Aster saundersii E.S.Burgess
             Symphyotrichum ciliolatum (Lindl.) A.Löve & D.Löve
    Aster cordifolius L.*+
        common blue heart-leaved aster, common blue wood aster
             Aster cordifolius L. subsp. cordifolius
             Aster cordifolius L. var. cordifolius
             Aster cordifolius L. var. moratus (Shinners) Shinners
             Aster finkii Rydb. var. moratus Shinners
             Symphyotrichum cordifolium (L.) G.L.Nesom
    Aster firmus Nees*+
        shining aster, shiny-leaved aster
             Aster lucidulus (A.Gray) Wiegand
             Aster lucidulus (A.Gray) Wiegand f. albiflorus (R.Hoffm.) Benke
             Aster lucidulus (A.Gray) Wiegand f. firmus (Nees) Deam
             Aster puniceus L. subsp. firmus
             Aster puniceus L. var. firmus (Nees) Torr. & A.Gray
             Aster puniceus L. f. lucidulus (A.Gray) Fernald var. firmus (Nees) Torr. & A.Gray
             Aster puniceus L. var. lucidulus A.Gray
             Symphyotrichum firmum (Nees) G.L.Nesom
    Aster hesperius A.Gray+
        Western lined aster
             Aster hesperius A.Gray var. laetevirens (Greene) Cronquist
             Aster hesperius A.Gray var. wootonii Greene
             Aster laetevirens Greene
             Aster lanceolatus Willd. subsp. hesperius
             Aster osterhoutii Rydb.
             Aster wootonii (Greene) Greene
             Symphyotrichum hesperium (A.Gray) A.Löve & D.Löve
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom subsp. hesperium
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom var. hesperium subsp. hesperium
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom var. hesperium (A.Gray) G.L.Nesom
    Aster hesperius A.Gray var. X A. lanceolatus Willd. var. simplex (Willd.) A.G.Jones+
             Aster hesperius A.Gray X A. simplex Willd.
    Aster laevis L. var. laevis *+
        smooth aster, smooth blue aster
             Aster laevis L. f. amplifolius (Porter) Fernald
             Aster laevis L. f. latifolius (Porter) Shinners
             Aster laevis L. f. purpurascens (Farw.) Shinners
             Aster laevis L. var. amplifolius Porter
             Aster laevis L. var. falcatus Farw.
             Aster laevis L. f. purpurascens Farw. var. falcatus Farw.
             Aster laevis L. var. latifolius Porter
             Aster laevis L. var. thyrsoideus Farw.
             Symphyotrichum laeve (L.) A.Löve & D.Löve
             Symphyotrichum laeve (L.) A.Löve & D.Löve var. laeve
    Aster lanceolatus Willd. var. lanceolatus +
        eastern lined aster, marsh aster, panicled aster, white panicle aster
             Aster bellidiflorus Willd.
             Aster lamarckianus Nees
             Aster lanceolatus Willd. subsp. lanceolatus
             Aster lanceolatus Willd. var. lanceolatus subsp. lanceolatus
             Aster laxus Willd.
             Aster paniculatus Lam.
             Aster paniculatus Lam. var. bellidiflorus (Willd.) E.S.Burgess
             Aster simplex Willd. var. estuarinus B.Boivin
             Aster simplex Willd. var. ramosissimus (Torr. & A.Gray) Cronquist
             Aster tenuifolius sensu Torr. & A.Gray var. ramosissimus Torr. & A.Gray
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom subsp. lanceolatum
             Symphyotrichum lanceolatum (Willd.) G.L.Nesom var. lanceolatum subsp. lanceolatum
    Aster lanceolatus Willd. var. simplex (Willd.) A.G.Jones+
        branched panicled aster, panicled aster, white panicle aster
             Aster lanceolatus Willd. subsp. simplex
             Aster paniculatus Lam. var. simplex (Willd.) E.S.Burgess
             Aster simplex Willd.
             Symphyotrichum simplex (Willd.) A.Löve & D.Löve
    Aster lateriflorus (L.) Britton*+
        calico aster, goblet aster, side-flowering aster
             Aster lateriflorus (L.) Britton var. glomerellus (Torr. & A.Gray) E.S.Burgess
             Aster miser L. var. glomerellus Torr. & A.Gray
    Aster lateriflorus (L.) Britton var. hirsuticaulis (Lindl. ex DC.) Porter+
        calico aster, goblet aster, side-flowering aster
             Aster acadiensis Shinners
             Aster hirsuticaulis Lindl. ex DC.
             Aster lateriflorus (L.) Britton var. tenuipes Wiegand
             Aster tradescantii L.
             Aster tradescantii L. var. saxatilis (Fernald) House
             Aster vimineus Lam. var. saxatilis Fernald
             Symphyotrichum lateriflorum (L.) A.Löve & D.Löve var. hirsuticaule (Lindl. ex DC.) G.L.Nesom
             Symphyotrichum lateriflorum (L.) A.Löve & D.Löve var. tenuipes (Wiegand) G.L.Nesom
             Symphyotrichum tradescantii (L.) G.L.Nesom
    Aster lateriflorus (L.) Britton var. lateriflorus +
        calico aster, goblet aster, side-flowering aster
             Aster vimineus Lam.
             Solidago lateriflora L.
             Symphyotrichum lateriflorum (L.) A.Löve & D.Löve
             Symphyotrichum lateriflorum (L.) A.Löve & D.Löve var. lateriflorum
    Aster lateriflorus (L.) Britton X A. ontarionis Wiegand+
    Aster macrophyllus L.*+
        big-leaved aster, large-leaved aster
             Aster ianthinus E.S.Burgess
             Aster macrophyllus L. f. eglandulosus Shinners
             Aster macrophyllus L. var. excelsior E.S.Burgess
             Aster macrophyllus L. var. ianthinus (E.S.Burgess) Fernald
             Aster macrophyllus L. var. macrophyllus
             Aster macrophyllus L. var. pinguifolius E.S.Burgess
             Aster macrophyllus L. var. sejunctus E.S.Burgess
             Aster macrophyllus L. var. velutinus E.S.Burgess
             Aster riciniatus E.S.Burgess
             Aster roscidus E.S.Burgess
             Aster violaris E.S.Burgess
             Eurbia macrophylla (L.) Cass.
    Aster ontarionis Wiegand*+
        bottomland aster, Ontario aster
             Aster diffusus Aiton var. thyrsoides A.Gray
             Aster lateriflorus (L.) Britton var. thyrsoides (A.Gray) E.Sheld.
             Aster missouriensis Britton, non Kuntze
             Aster missouriensis Britton var. thyrsoides (A.Gray) Wiegand
             Aster pantotrichus S.F.Blake
             Aster pantotrichus S.F.Blake var. thyrsoides (A.Gray) S.F.Blake
             Aster tradescantii L. var. thyrsoides (A.Gray) B.Boivin
             Symphyotrichum ontarione (Wiegand) G.L.Nesom
    Aster pilosus Willd. var. pringlei (A.Gray) S.F.Blake*+
        awl aster, frost aster, hairy aster, Pringle's aster, white old-field aster
             Aster ericoides L. var. pringlei A.Gray
             Aster faxonii Porter
             Aster pilosus Willd. var. demotus S.F.Blake
             Aster polyphyllus Willd., non Moench
             Aster pringlei (A.Gray) Britton
             Symphyotrichum pilosum (Willd.) G.L.Nesom var. pringlei (A.Gray) G.L.Nesom
    Aster praealtus Poir. var. coerulescens (DC.) A.G.Jones+
        veiny lined aster, willow aster, willow-leaved aster
             Aster coerulescens DC.
             Aster praealtus Poir. var. texicola Wiegand
             Symphyotrichum praealtum (Poir.) G.L.Nesom var. texicola (Wiegand) G.L.Nesom
    Aster puniceus L.*+
        bristly aster, purple-stem aster, swamp aster
             Aster conduplicatus E.S.Burgess
             Aster forwoodii S.Watson
             Aster puniceus L. f. albiflorus (Farw.) Shinners
             Aster puniceus L. f. colbyi (Benke) Shinners
             Aster puniceus L. f. glabratus Shinners
             Aster puniceus L. var. albiflorus Farw.
             Aster puniceus L. var. calvus Shinners
             Aster puniceus L. var. colbyi Benke
             Aster puniceus L. var. compactus Fernald
             Aster puniceus L. var. demissus Lindl.
             Aster puniceus L. var. monocephalus Farw.
             Aster puniceus L. var. oligocephalus Fernald
             Aster puniceus L. var. puniceus
             Symphyotrichum puniceum (L.) A.Löve & D.Löve
             Symphyotrichum puniceum (L.) A.Löve & D.Löve var. puniceum
    Aster sagittifolius Wedem. ex Willd.*+
        arrow-leaved aster
             Aster cordifolius L. subsp. sagittifolius
             Aster cordifolius L. var. sagittifolius (Wedem. ex Willd.) A.G.Jones
             Aster hirtellus Lindl. ex DC.
             Aster sagittifolius Wedem. ex Willd. f. hirtellus (Lindl. ex DC.) Shinners
             Aster sagittifolius Wedem. ex Willd. var. glomerellus Farw.
             Aster sagittifolius Wedem. ex Willd. var. urophyllus (Lindl.) E.S.Burgess
             Aster urophyllus Lindl.
             Aster urophyllus Lindl. var. glomerellus Farw.
             Symphyotrichum urophyllum (Lindl.) G.L.Nesom
    Aster umbellatus Mill.*+
        flat-top aster, parasol aster, tall flat-topped white aster
    Aster umbellatus Mill. var. pubens A.Gray+
        hairy flat-top aster, parasol aster
             Aster pubentior Cronquist
             Aster sericocarpoides (Small) K.Schum.
             Aster umbellatus Mill. var. latifolius A.Gray
             Doellingeria pubens (A.Gray) Rydb.
             Doellingeria sericocarpoides Small
             Doellingeria umbellata (Mill.) Nees subsp. pubens
             Doellingeria umbellata (Mill.) Nees var. latifolia (A.Gray) House
             Doellingeria umbellata (Mill.) Nees var. pubens (A.Gray) Britton
    Aster umbellatus Mill. var. umbellatus +
        flat-top aster, parasol aster, tall flat-topped white aster
             Doellingeria umbellata (Mill.) Nees
             Doellingeria umbellata (Mill.) Nees var. umbellata
  Genus: Bidens
    Bidens cernuus L.*+
        nodding beggar-ticks, nodding bur-marigold
             Bidens cernuus L. f. discoideus (Wimm. & Grab.) Briq. & Cavill.
             Bidens cernuus L. f. minimus (Huds.) Larss.
             Bidens cernuus L. var. dentatus (Nutt.) B.Boivin
             Bidens cernuus L. var. ellipticus Wiegand
             Bidens cernuus L. var. integrus Wiegand
             Bidens cernuus L. var. minimus (Huds.) Pursh
             Bidens cernuus L. var. oligodontus Fernald & H.St.John
             Bidens cernuus L. var. radiatus DC.
             Bidens glaucescens Greene
             Bidens minimus Huds.
    Bidens comosus (A.Gray) Wiegand*+
        straw-stem beggar-ticks, swamp marigold, swamp tickseed
             Bidens acutus (Wiegand) Britton
             Bidens comosus (A.Gray) Wiegand var. acutus Wiegand
             Bidens tripartitus L., sensu Kartesz (1994)
    Bidens connatus Muhl. ex Willd.*+
        purple-stem beggar-ticks, purple-stemmed tickseed
             Bidens connatus Muhl. ex Willd. var. ambiversus Fassett
             Bidens connatus Muhl. ex Willd. var. anomalus Farw.
             Bidens connatus Muhl. ex Willd. var. connatus
             Bidens connatus Muhl. ex Willd. var. fallax (Warnst.) Sherff
             Bidens connatus Muhl. ex Willd. var. gracilipes Fernald
             Bidens connatus Muhl. ex Willd. var. inundatus Fernald
             Bidens connatus Muhl. ex Willd. var. petiolatus (Nutt.) Farw.
             Bidens connatus Muhl. ex Willd. var. pinnatus S.Watson
             Bidens connatus Muhl. ex Willd. var. submuticus Fassett
             Bidens connatus Muhl. ex Willd. var. typicus Fassett
             Bidens petiolatus Nutt.
             Bidens tripartitius L. var. fallax Warnst.
    Bidens discoideus (Torr. & A.Gray) Britton*+
        few-bracted beggar-ticks, swamp beggar-ticks
             Coreopsis discoidea Torr. & A.Gray
    Bidens frondosus L.*+
        common beggar-ticks, devil's beggar-ticks
             Bidens comosus (A.Gray) Wiegand X B. frondosus L.
             Bidens frondosus L. f. anomalus (Porter ex Fernald) Fernald
             Bidens frondosus L. var. anomalus Porter ex Fernald
             Bidens frondosus L. var. caudatus Sherff
             Bidens frondosus L. var. frondosus
             Bidens frondosus L. var. pallidus Wiegand
             Bidens frondosus L. var. puberulus Wiegand
             Bidens frondosus L. var. stenodontus Fernald & H.St.John
    Bidens vulgatus Greene*+
        big devil's beggar-ticks, tall beggar-ticks
             Bidens puberulus Wiegand
             Bidens vulgatus Greene f. puberulus (Wiegand) Fernald
             Bidens vulgatus Greene var. puberulus (Wiegand) Greene
             Bidens vulgatus Greene var. schizanthus Lunell
             Bidens vulgatus Greene var. vulgatus
  Genus: Centaurea
    Centaurea biebersteinii DC.*+
        spotted knapweed
             Acosta maculosa auct. non Holub
             Centaurea maculosa auct. non Lam.
    Centaurea montana L.*+
        mountain-bluet, mountain cornflower
  Genus: Cichorium
    Cichorium intybus L.*+
        blue-sailors, chicory
             Cichorium intybus L. f. albiflorum Neuman
             Cichorium intybus L. f. roseum Neuman
  Genus: Cirsium
    Cirsium arvense (L.) Scop.*+
        Canada thistle, creeping thistle, field thistle
             Carduus arvensis (L.) Robson
             Cirsium arvense (L.) Scop. f. albiflorum (E.L.Rand & Redfield) Ralph Hoffm.
             Cirsium arvense (L.) Scop. var. argenteum (Vest) Fiori
             Cirsium arvense (L.) Scop. var. horridum Wimm. & Grab.
             Cirsium arvense (L.) Scop. var. integrifolium Wimm. & Grab.
             Cirsium arvense (L.) Scop. var. mite Wimm. & Grab.
             Cirsium arvense (L.) Scop. var. vestitum Wimm. & Grab.
             Cirsium incanum (Gmel.) Fisch.
             Cirsium setosum (Willd.) Besser ex M.Bieb.
             Cnicus arvensis (L.) Roth
             Cnicus arvensis (L.) Roth f. albiflorum E.L.Rand & Redfield
             Serratula arvensis L.
    Cirsium muticum Michx.*+
        swamp thistle
             Carduus muticus (Michx.) Pers.
             Cirsium bigelovii DC.
             Cirsium muticum Michx. f. lactiflorum Fernald
             Cirsium muticum Michx. var. monticola Fernald
             Cirsium muticum Michx. var. subpinnatifidum (Britton) Fernald
    Cirsium vulgare (Savi) Ten.*+
        bull thistle
             Carduus lanceolatus L.
             Carduus vulgaris Savi
             Cirsium lanceolatum (L.) Scop., non Hill
             Cirsium lanceolatum (L.) Scop. var. hypoleucum DC.
  Genus: Conyza
    Conyza canadensis (L.) Cronquist var. canadensis *+
        Canadian horseweed, fleabane, hogweed
             Erigeron canadensis L.
             Erigeron canadensis L. f. coloratus Fassett
             Leptilon canadense (L.) Britton
  Genus: Coreopsis
    Coreopsis lanceolata L. var. villosa Michx.+
        lance-leaf tickseed, long-stalk tickseed, sand coreopsis, sand tickseed
  Genus: Crepis
    Crepis tectorum L.*+
        hawk's-beard, narrow-leaved hawk's-beard
  Genus: Erechtites
    Erechtites hieracifolia (L.) Raf. ex DC. var. hieracifolia *+
        American burn-weed, fireweed
             Erechtites hieracifolia (L.) Raf. ex DC. var. intermedia Fernald
             Erechtites hieracifolia (L.) Raf. ex DC. var. praealta (Raf.) Fernald
             Erechtites hieracifolia (L.) Raf. ex DC. var. typica Fernald
             Senecio hieracifolius L.
  Genus: Erigeron
    Erigeron acris L. var. kamtschaticus (DC.) Herder
        bitter fleabane
             Erigeron acris L. subsp. kamtschaticus
             Erigeron kamtschaticus DC.
             Erigeron yellowstonensis A.Nelson
             Trimorpha acris (L.) Gray var. kamtschatica (DC.) G.L.Nesom
    Erigeron annuus (L.) Pers.*+
        annual fleabane, eastern daisy fleabane
             Erigeron annuus (L.) Pers. f. discoideus Vict. & J.Rousseau
             Erigeron annuus (L.) Pers. var. discoideus (Vict. & J.Rousseau) Cronquist
    Erigeron philadelphicus L.*+
        common fleabane, marsh fleabane, Philadelphia daisy
    Erigeron strigosus Muhl. ex Willd. var. septentrionalis (Fernald & Wiegand) Fernald+
        daisy fleabane, prairie fleabane
             Erigeron ramosus (Walter) Britton, Sterns & Poggenb. var. septentrionalis Fernald & Wiegand
             Erigeron strigosus Muhl. ex Willd. subsp. septentrionalis
             Stenactis annua (L.) Nees subsp. septentrionalis
             Stenactis septentrionalis (Fernald & Wiegand) Holub
    Erigeron strigosus Muhl. ex Willd. var. strigosus +
        daisy fleabane, prairie fleabane, rough fleabane
             Doronicum ramosum Walter
             Erigeron annuus (L.) Pers. subsp. strigosus
             Erigeron ramosus (Walter) Britton, Sterns & Poggenb.
             Erigeron strigosus Muhl. ex Willd. f. discoideus (Robbins ex A.Gray) Fernald
             Erigeron strigosus Muhl. ex Willd. var. beyrichii (Fisch. & C.A.Mey.) Torr & A.Gray
             Erigeron strigosus Muhl. ex Willd. var. discoideus Robbins ex A.Gray
             Erigeron strigosus Muhl. ex Willd. var. eligulatus Cronquist
             Erigeron strigosus Muhl. ex Willd. var. typicus Cronquist
             Erigeron traversii Shinners
             Stenactis annua (L.) Nees subsp. strigosa
             Stenactis beyrichii Fisch. & C.A.Mey.
             Stenactis strigosa (Muhl. ex Willd.) DC.
  Genus: Eupatorium
    Eupatorium maculatum L. var. maculatum subsp. maculatum+
        spotted Joe-Pye-weed
             Eupatorium maculatum L. var. maculatum
             Eupatoriadelphus maculatus (L.) R.M.King & H.Rob.
    Eupatorium perfoliatum L. var. perfoliatum *+
        boneset, common boneset, thoroughwort
             Eupatorium perfoliatum L. f. perfoliatum
             Eupatorium perfoliatum L. f. purpureum Britton
             Eupatorium perfoliatum L. f. trifolium Fassett
             Eupatorium perfoliatum L. f. truncatum (Muhl. ex Willd.) Fassett
  Genus: Euthamia
    Euthamia graminifolia (L.) Nutt. var. graminifolia *+
        common flat-topped goldenrod, grass-leaved goldenrod
             Chrysocoma graminifolia L.
             Euthamia floribunda Greene
             Euthamia graminifolia (L.) Nutt. var. nuttallii (Greene) W.Stone
             Euthamia nuttallii Greene
             Solidago graminifolia (L.) Salisb.
             Solidago graminifolia (L.) Salisb. var. graminifolia
             Solidago graminifolia (L.) Salisb. var. nuttallii (Greene) Fernald
             Solidago graminifolia (L.) Salisb. var. polycephala (Fernald) Fernald
             Solidago graminifolia (L.) Salisb. var. typica Rosend. & Cronquist
             Solidago hirtella (Greene) Bush
             Solidago nuttallii (Greene) Bush
             Solidago polycephala Fernald
  Genus: Gaillardia
    Gaillardia aristata Pursh*+
        common blanket-flower, common gaillardia
  Genus: Gnaphalium
    Gnaphalium macounii Greene+
        clammy cudweed, western cudweed
             Gnaphalium decurrens Ives
             Gnaphalium viscosum Kunth
             Pseudognaphalium viscosum (Kunth) W.A.Weber
    Gnaphalium sylvaticum L.*+
        woodland cudweed
             Omalotheca sylvatica (L.) Sch.Bip. & F.W.Schultz
    Gnaphalium uliginosum L.*+
        low cudweed, marsh cudweed
             Filaginella uliginosa (L.) Opiz
  Genus: Grindelia
    Grindelia squarrosa (Pursh) Dunal var. squarrosa +
        curly-cup gum-weed, gum-plant, gum-weed
  Genus: Helenium
    Helenium autumnale L. var. autumnale *+
        common sneezeweed
             Helenium altissimum Link
             Helenium autumnale L. var. canaliculatum (Lam.) Torr. & A.Gray
             Helenium canaliculatum Lam.
             Helenium latifolium Mill.
    Helenium flexuosum Raf.*+
        purple-head sneezeweed, southern sneezeweed
             Helenium floridanum Fernald
             Helenium godfreyi Fernald
             Helenium nudiflorum Nutt.
             Helenium polyphyllum Small
  Genus: Helianthus
    Helianthus giganteus L.*+
        giant sunflower, swamp sunflower, tall sunflower
             Helianthus alienus E.Watson
             Helianthus borealis E.Watson
             Helianthus exasperatus E.Watson
             Helianthus giganteus L. subsp. alienus
             Helianthus giganteus L. var. subtuberosus Britton
             Helianthus membranaceus E.Watson
             Helianthus nuttallii Torr. & A.Gray var. subtuberosus (Britton) B.Boivin
             Helianthus subtuberosus (Britton) Britton
             Helianthus validus E.Watson
    Helianthus maximilianii Schrad.*+
        Maximilian's sunflower
             Helianthus dalyi Britton
    Helianthus mollis Lam.*+
        ashy sunflower, downy sunflower, soft sunflower
             Helianthus mollis Lam. var. cordatus S.Watson
    Helianthus strumosus L.*+
        pale-leaved woodland sunflower, rough-leaved sunflower
             Helianthus montanus E.Watson
             Helianthus saxicola Small
  Genus: Heliopsis
    Heliopsis helianthoides (L.) Sweet var. scabra (Dunal) Fernald+
        false sunflower, ox-eye, sunflower-everlasting
             Heliopsis helianthoides (L.) Sweet subsp. occidentalis
             Heliopsis helianthoides (L.) Sweet subsp. scabra
             Heliopsis helianthoides (L.) Sweet var. occidentalis (T.R.Fisher) Steyerm.
             Heliopsis minor (Hook.) C.Mohr
             Heliopsis scabra Dunal
  Genus: Hieracium
    Hieracium aurantiacum L.*+
        devil's-paintbrush, grim-the-collier, orange hawkweed, red daisy
    Hieracium caespitosum Dumort.+
        field hawkweed, meadow hawkweed, yellow king-devil
             Hieracium pratense Tausch
    Hieracium kalmii L.*+
        Canada hawkweed, Kalm's hawkweed
             Hieracium canadense Michx.
             Hieracium canadense Michx. var. canadense
             Hieracium canadense Michx. var. fasciculatum (Pursh) Fernald
             Hieracium columbianum Rydb.
             Hieracium kalmii L. var. fasciculatum (Pursh) Lepage
             Hieracium kalmii L. var. kalmii
             Hieracium kalmii L. var. subintegrum (Lepage) Lepage
             Hieracium scabriusculum Schwein. var. columbianum (Rydb.) Lepage
             Hieracium umbellatum L. var. canadense (Michx.) Breitung
             Hieracium umbellatum L. var. scabriusculum Farw.
    Hieracium kalmii L. X H. umbellatum L.+
             Hieracium kalmii L. X H. scabriusculum Schwein.
    Hieracium piloselloides Vill.*+
        glaucous king-devil, tall hawkweed
             Hieracium florentinum All.
    Hieracium pilosella L. var. pilosella +
        mouse-ear hawkweed
    Hieracium scabrum Michx.*+
        rough hawkweed, sticky hawkweed
             Hieracium scabrum Michx. var. scabrum
             Hieracium scabrum Michx. var. tonsum Fernald & H.St.John
    Hieracium scabrum Michx. X H. umbellatum L.+
             Hieracium scabriusculum Schwein. X H. scabrum Michx.
    Hieracium umbellatum L.+
        narrow-leaved hawkweed, northern hawkweed
             Hieracium mineapolitanum Gand.
             Hieracium scabriusculum Schwein.
             Hieracium scabriusculum Schwein. var. perhirsutum Lepage
             Hieracium scabriusculum Schwein. var. saximontanum Lepage
             Hieracium scabriusculum Schwein. var. scabriusculum
             Hieracium scabriusculum Schwein. var. scabrum (Schwein.) Lepage
             Hieracium scabriusculum Schwein. f. xanthostylum Lepage var. scabrum (Schwein.) Lepage
  Genus: Iva
    Iva xanthifolia Nutt.*+
        bur-weed marsh-elder, giant sump-weed
             Cyclachaena xanthifolia (Nutt.) Fresen.
  Genus: Lactuca
    Lactuca biennis (Moench) Fernald*+
        tall blue lettuce, woodland lettuce
             Lactuca biennis (Moench) Fernald f. aurea (Jenn.) Fernald
             Lactuca biennis (Moench) Fernald f. integrifolia (Torr. & A.Gray) Fernald
             Lactuca spicata auct. non (Lam.) Hitchc.
             Lactuca spicata (Lam.) Hitchc. var. integrifolia (Torr. & A.Gray) Britton
             Mulgedium spicatum auct. non (Lam.) Small
             Mulgedium spicatum (Lam.) Small var. integrifolium (Torr. & A.Gray) Small
             Sonchus biennis Moench
    Lactuca canadensis L.*+
        Canada lettuce, tall lettuce, tall wild lettuce, wild lettuce
             Lactuca canadensis L. var. canadensis
             Lactuca canadensis L. var. integrifolia (Bigelow) Torr. & A.Gray
             Lactuca canadensis L. var. latifolia Kuntze
             Lactuca canadensis L. f. exauriculata Wiegand var. latifolia Kuntze
             Lactuca canadensis L. var. longifolia (Michx.) Farw.
             Lactuca canadensis L. f. angustipes (Wiegand) Farw. var. longifolia (Michx.) Farw.
             Lactuca canadensis L. var. obovata Wiegand
             Lactuca canadensis L. var. spinulosa Jenn.
             Lactuca canadensis L. var. typica Wiegand
             Lactuca canadensis L. f. angustipes Wiegand var. typica Wiegand
             Lactuca sagittifolia Elliott
    Lactuca serriola L.*+
        compass-plant, prickly lettuce
             Lactuca integrata (Gren. & Godr.) A.Nelson
             Lactuca scariola L.
             Lactuca scariola L. f. integrifolia (Bogenh.) Beck
             Lactuca scariola L. var. integrata Gren. & Godr.
             Lactuca serriola L. var. integrata (Gren. & Godr.) Farw.
  Genus: Lapsana
    Lapsana communis L.*+
        common nipplewort, nipplewort
  Genus: Leucanthemum
    Leucanthemum vulgare Lam.*+
        common daisy, field daisy, marguerite, ox-eye daisy
             Chrysanthemum leucanthemum L.
             Chrysanthemum leucanthemum L. var. boecheri B.Boivin
             Chrysanthemum leucanthemum L. var. pinnatifidum Lecoq & Lamotte
             Leucanthemum leucanthemum (L.) Rydb.
             Leucanthemum vulgare Lam. var. pinnatifidum (Lecoq & Lamotte) Moldenke
  Genus: Liatris
    Liatris aspera Michx.*+
        lacerate blazing-star, rough blazing-star, tall gay-feather
             Lacinaria aspera (Michx.) Greene
             Liatris aspera Michx. f. benkei (J.F.Macbr.) Fernald
             Liatris aspera Michx. var. aspera
             Liatris aspera Michx. var. intermedia (Lunell) Gaiser
             Liatris aspera Michx. var. typica Gaiser
             Liatris scariosa (L.) Willd. f. benkei J.F.Macbr.
    Liatris ligulistylis (A.Nelson) K.Schum.*+
        northern plains blazing-star, showy blazing-star
             Lacinaria ligulistylis A.Nelson
  Genus: Matricaria
    Matricaria discoidea DC.*+
        pineapple-weed
             Artemisia matricarioides Less.
             Chamomilla suaveolens (Pursh) Rydb.
             Lepidanthus suaveolens (Pursh) Nutt.
             Lepidotheca suaveolens (Pursh) Nutt.
             Matricaria matricarioides (Less.) Porter
             Matricaria suaveolens (Pursh) Buchenau, non L.
             Santolina suaveolens Pursh
             Tanacetum suaveolens (Pursh) Hook.
  Genus: Megalodonta
    Megalodonta beckii (Torr. ex Spreng.) Greene*+
        water beggar-ticks, water-marigold
             Bidens beckii Torr. ex Spreng.
  Genus: Packera
    Packera aurea (L.) A.Löve & D.Löve*+
        golden ragwort, heart-leaved groundsel
             Senecio aureus L.
             Senecio aureus L. var. aquilonius Fernald
             Senecio aureus L. var. gracilis (Pursh) Hook.
             Senecio aureus L. var. intercursus Fernald
             Senecio gracilis Pursh
    Packera indecora (Greene) A.Löve & D.Löve*+
        elegant groundsel, plains ragwort, rayless ragwort, taller discoid groundsel
             Senecio indecorus Greene
             Senecio pauciflorus Pursh var. fallax (Greenm.) Greenm.
    Packera paupercula (Michx.) A.Löve & D.Löve*+
        balsam groundsel, balsam ragwort, northern meadow groundsel, northern ragwort
             Senecio aureus L. var. balsamitae (Muhl. ex Willd.) Torr. & A.Gray
             Senecio balsamitae Muhl. ex Willd.
             Senecio crawfordii (Britton) G.W.Douglas & G.R.Douglas
             Senecio gaspensis Greenm.
             Senecio gaspensis Greenm. var. firmifolius (Greenm.) Fernald
             Senecio pauperculus Michx.
             Senecio pauperculus Michx. var. balsamitae (Muhl. ex Willd.) Fernald
             Senecio pauperculus Michx. var. crawfordii (Britton) T.M.Barkley
             Senecio pauperculus Michx. var. firmifolius (Greenm.) Greenm.
             Senecio pauperculus Michx. var. neoscoticus Fernald
             Senecio pauperculus Michx. var. pauperculus
             Senecio pauperculus Michx. var. praelongus (Greenm.) House
             Senecio pauperculus Michx. var. thompsoniensis (Greenm.) B.Boivin
             Senecio tweedyi Rydb.
  Genus: Petasites
    Petasites frigidus (L.) Fr. var. palmatus (Aiton) Cronquist*+
        Arctic sweet-colt's-foot, northern sweet-colt's-foot
             Nardosmia arctica (Porsild) A.Löve & D.Löve
             Petasites frigidus (L.) Fr. subsp. palmatus
             Petasites arcticus Porsild
             Petasites frigidus (L.) Fr. subsp. arcticus
             Petasites hookerianus (Nutt.) Rydb.
             Petasites palmatus (Aiton) A.Gray
             Petasites speciosus (Nutt.) Piper
             Tussilago palmata Aiton
    Petasites sagittatus (Banks ex Pursh) A.Gray*+
        arrowhead sweet-colt's-foot, arrow-leaf sweet-colt's-foot
             Petasites dentatus Blank.
             Tussilago sagittata Banks ex Pursh
  Genus: Prenanthes
    Prenanthes alba L.*+
        lion's-foot, rattlesnake-root, white-lettuce
             Nabalus albus (L.) Hook.
  Genus: Ratibida
    Ratibida pinnata (Vent.) Barnhart*+
        globular coneflower, yellow coneflower
             Lepachys pinnata (Vent.) Torr. & A.Gray
             Rudbeckia pinnata Vent.
  Genus: Rudbeckia
    Rudbeckia hirta L. var. pulcherrima Farw.*+
        black-eyed Susan
             Rudbeckia bicolor Nutt.
             Rudbeckia hirta L. var. corymbifera Fernald
             Rudbeckia hirta L. var. lanceolata (Bisch.) Core
             Rudbeckia hirta L. var. sericea (T.V.Moore) Fernald
             Rudbeckia hirta L. var. serotina (Nutt.) Core
             Rudbeckia lanceolata Bisch.
             Rudbeckia longipes T.V.Moore
             Rudbeckia serotina Nutt.
             Rudbeckia sericea T.V.Moore
             Rudbeckia serotina Nutt. var. corymbifera (Fernald) Fernald & B.G.Schub.
             Rudbeckia serotina Nutt. var. lanceolata (Bisch.) Fernald & B.G.Schub.
             Rudbeckia serotina Nutt. var. sericea (T.V.Moore) Fernald & B.G.Schub.
    Rudbeckia laciniata L. var. laciniata +
        cut-leaved coneflower, wild golden-glow
  Genus: Senecio
    Senecio vulgaris L.*+
        common groundsel
  Genus: Solidago
    Solidago canadensis L.*+
        Canadian goldenrod, common goldenrod
    Solidago canadensis L. var. canadensis *+
        Canadian goldenrod, common goldenrod
    Solidago canadensis L. var. hargeri Fernald+
        Canadian goldenrod, Harger's goldenrod
             Solidago canadensis L. var. gilvocanescens Rydb., misapplied
    Solidago canadensis L. var. salebrosa (Piper) M.E.Jones+
        Canadian goldenrod, salebrosa goldenrod
             Solidago canadensis L. subsp. elongata
             Solidago canadensis L. subsp. salebrosa
             Solidago canadensis L. var. elongata (Nutt.) M.Peck
             Solidago elongata Nutt.
             Solidago lepida DC. var. elongata (Nutt.) Fernald
             Solidago lepida DC. var. fallax Fernald
             Solidago serotina Aiton var. salebrosa Piper
    Solidago canadensis L. var. scabra Torr. & A.Gray*+
        Canadian goldenrod, common goldenrod, tall goldenrod
             Solidago altissima L.
             Solidago altissima L. var. pluricephala M.C.Johnst.
             Solidago altissima L. var. procera (Aiton) Fernald
             Solidago hirsutissima Mill.
             Solidago lunellii Rydb.
             Solidago procera Aiton
    Solidago flexicaulis L.*+
        broad-leaved goldenrod, zigzag goldenrod
             Solidago latifolia L.
    Solidago gigantea Aiton*+
        giant goldenrod, late goldenrod, smooth goldenrod
             Aster latissimifolius (Mill.) Kuntze var. serotinus Kuntze
             Solidago gigantea Aiton subsp. serotina
             Solidago gigantea Aiton var. gigantea
             Solidago gigantea Aiton var. leiophylla Fernald
             Solidago gigantea Aiton var. pitcheri (Nutt.) Shinners
             Solidago gigantea Aiton var. serotina (Kuntze) Cronquist
             Solidago gigantea Aiton var. shinnersii Beaudry
             Solidago pitcheri Nutt.
             Solidago serotina Aiton, non Retz.
             Solidago serotinoides A.Löve & D.Löve
             Solidago serotina Aiton var. gigantea (Aiton) A.Gray
             Solidago shinnersii (Beaudry) Beaudry
             Solidago X leiophallax Friesner X
    Solidago hispida Muhl. ex Willd. var. hispida *+
        hairy goldenrod
             Solidago bicolor L. var. concolor Torr. & A.Gray
             Solidago bicolor L. var. ovalis Farw.
             Solidago bicolor L. var. tonsa (Fernald) B.Boivin
             Solidago hispida Muhl. ex Willd. var. tonsa Fernald
    Solidago juncea Aiton*+
        early goldenrod
             Solidago arguta Aiton var. scabrella Torr. & A.Gray
             Solidago juncea Aiton f. juncea
             Solidago juncea Aiton f. scabrella (Torr. & A.Gray) Fernald
             Solidago juncea Aiton var. scabrella (Torr. & A.Gray) A.Gray
    Solidago missouriensis Nutt. var. fasciculata Holz.+
        Missouri goldenrod
             Solidago glaberrima M.Martens
             Solidago glaberrima M.Martens var. moritura (Steele) E.J.Palmer & Steyerm.
             Solidago missouriensis Nutt. var. glaberrima (M.Martens) Rosend. & Cronquist
             Solidago moritura Steele
    Solidago nemoralis Aiton*+
        dyer's-weed goldenrod, gray goldenrod, old-field goldenrod
    Solidago nemoralis Aiton subsp. nemoralis+
        dyer's-weed goldenrod, field goldenrod, gray goldenrod, old-field goldenrod
             Solidago nemoralis Aiton subsp. haleana
             Solidago nemoralis Aiton var. haleana Fernald
             Solidago nemoralis Aiton var. nemoralis
             Solidago nemoralis Aiton var. typica Rosend. & Cronquist
    Solidago speciosa Nutt.*+
        showy goldenrod
    Solidago uliginosa Nutt.*+
        northern bog goldenrod
             Solidago chrysolepis Fernald
             Solidago humilis Pursh var. peracuta Fernald
             Solidago linoides Torr. & A.Gray
             Solidago neglecta Torr. & A.Gray
             Solidago purshii Porter
             Solidago uliginosa Nutt. var. linoides (Torr. & A.Gray) Fernald
             Solidago uliginosa Nutt. var. neglecta (Torr. & A.Gray) Fernald
             Solidago uliginosa Nutt. var. peracuta (Fernald) Friesner
             Solidago uliginosa Nutt. var. uliginosa
             Solidago uniligulata (DC.) Porter
             Solidago uniligulata (DC.) Porter var. neglecta (Torr. & A.Gray) Fernald
  Genus: Sonchus
    Sonchus arvensis L. var. glabrescens Günther, Grab. & Wimm.*+
        marsh sow-thistle
             Sonchus arvensis L. subsp. uliginosus
             Sonchus uliginosus M.Bieb.
    Sonchus asper (L.) Hill*+
        prickly sow-thistle, spiny sow-thistle
             Sonchus asper (L.) Hill f. glandulosus Beckh.
             Sonchus asper (L.) Hill f. inermis (Bisch.) Beck
             Sonchus asper (L.) Hill var. inermis Bisch.
             Sonchus asper (L.) Hill f. gracilis A.F.Schwarz var. inermis Bisch.
             Sonchus asper (L.) Hill var. pungens Bisch.
  Genus: Tanacetum
    Tanacetum vulgare L.*+
        common tansy, golden-buttons, tansy
             Chrysanthemum vulgare (L.) Bernh.
             Tanacetum vulgare L. f. crispum (L.) Fernald
             Tanacetum vulgare L. var. crispum L.
  Genus: Taraxacum
    Taraxacum laevigatum (Willd.) DC.+
        red-seeded dandelion, rock dandelion
             Leontodon erythrospermum (Andrz.) Britton
             Taraxacum disseminatum G.E.Haglund
             Taraxacum erythrospermum Andrz. ex Besser
             Taraxacum lacistophyllum (Dahlst.) Raunk.
             Taraxacum scanicum Dahlst.
    Taraxacum officinale Weber*+
        common dandelion
  Genus: Tragopogon
    Tragopogon dubius Scop.*+
        fistulous goat's-beard, greater sand goat's-beard, yellow salsify
             Tragopogon dubius Scop. subsp. major
             Tragopogon major Jacq.
  Genus: Xanthium
    Xanthium strumarium L.*+
        common cocklebur, rough cocklebur
    Xanthium strumarium L. var. canadense (Mill.) Torr. & A.Gray+
        common cocklebur, rough cocklebur
             Xanthium acerosum Greene
             Xanthium californicum Greene
             Xanthium californicum Greene var. rotundifolium Widder
             Xanthium campestre Greene
             Xanthium canadense Mill.
             Xanthium cavanillesii Schouw
             Xanthium cenchroides Millsp. & Sherff
             Xanthium commune Britton
             Xanthium echinatum Murray
             Xanthium glanduliferum Greene
             Xanthium italicum Moretti
             Xanthium macounii Britton
             Xanthium oligacanthum Piper
             Xanthium oviforme Wallr.
             Xanthium pensylvanicum Wallr.
             Xanthium saccharatum Wallr.
             Xanthium speciosum Kearney
             Xanthium strumarium L. subsp. italicum
             Xanthium strumarium L. var. oviforme (Wallr.) M.Peck
             Xanthium strumarium L. var. pensylvanicum (Wallr.) M.Peck
             Xanthium varians Greene
Family: Balsaminaceae
  Genus: Impatiens
    Impatiens capensis Meerb.*+
        orange jewelweed, orange touch-me-not, spotted touch-me-not
             Impatiens biflora Walter
             Impatiens capensis Meerb. f. immaculata (Weath.) Fernald & B.G.Schub.
             Impatiens fulva Nutt.
             Impatiens noli-tangere L. subsp. biflora
             Impatiens nortonii Rydb.
    Impatiens pallida Nutt.*+
        pale touch-me-not, yellow jewelweed, yellow touch-me-not
Family: Berberidaceae
  Genus: Berberis
    Berberis thunbergii DC.*+
        Japanese barberry
    Berberis vulgaris L.*+
        Common barberry, European barberry
  Genus: Caulophyllum
    Caulophyllum thalictroides (L.) Michx.*+
        blue cohosh, papoose-root, squaw-root
             Caulophyllum thalictroides (L.) Michx. var. thalictroides
             Leontice thalictroides L.
Family: Betulaceae
  Genus: Alnus
    Alnus incana (L.) Moench subsp. rugosa*+
        mountain alder, speckled alder, swamp alder
             Alnus glauca Michx.
             Alnus incana (L.) Moench f. tomophylla Fernald
             Alnus incana (L.) Moench var. americana Regel
             Alnus rugosa (Du Roi) Spreng.
             Alnus rugosa (Du Roi) Spreng. var. americana (Regel) Fernald
             Alnus rugosa (Du Roi) Spreng. var. tomophylla (Fernald) Fernald
             Betula alnus L. var. rugosa Du Roi
    Alnus viridis (Vill.) DC. subsp. crispa*+
        American green alder, green alder, mountain alder
             Alnus alnobetula (Ehrh.) K.Koch var. crispa (Aiton) H.J.P.Winkler
             Alnus crispa (Aiton) Pursh
             Alnus crispa (Aiton) Pursh var. elongata Raup
             Alnus crispa (Aiton) Pursh var. harricanensis Lepage
             Alnus crispa (Aiton) Pursh var. mollis (Fernald) Fernald
             Alnus crispa (Aiton) Pursh var. stragula Fernald
             Alnus mitchelliana M.A.Curtis ex A.Gray
             Alnus mollis Fernald
             Alnus viridis (Vill.) DC. var. crispa (Aiton) House
             Alnus viridis (Vill.) DC. var. fernaldii House
             Alnus X hultenii Murai X
             Betula crispa Aiton
             Duschekia viridis (Chaix) Opiz
  Genus: Betula
    Betula alleghaniensis Britton*+
        yellow birch
             Betula alleghaniensis Britton var. alleghaniensis
             Betula alleghaniensis Britton var. fallax (Fassett) Brayshaw
             Betula alleghaniensis Britton var. macrolepis (Fernald) Brayshaw
             Betula lutea F.Michx.
             Betula lutea F.Michx. f. fallax Fassett
             Betula lutea F.Michx. var. macrolepis Fernald
             Betula purpusii C.K.Schneid. f. fallax (Fassett) B.Boivin
    Betula cordifolia Regel*+
        heart-leaf birch, mountain white birch
             Betula alba L. var. cordifolia (Regel) Regel
             Betula papyrifera Marshall var. cordifolia (Regel) Fernald
    Betula papyrifera Marshall*+
        canoe birch, paper birch, white birch
             Betula alba L. var. elobata Fernald
             Betula alba L. var. papyrifera (Marshall) Spach
             Betula papyracea Aiton
             Betula papyrifera Marshall var. elobata (Fernald) Sarg.
             Betula papyrifera Marshall var. macrostachya Fernald
             Betula papyrifera Marshall var. papyrifera
             Betula papyrifera Marshall var. pensilis Fernald
             Betula papyrifera Marshall var. commutata (Regel) Fernald
             Betula papyrifera Marshall var. subcordata (Rydb.) Sarg.
             Betula subcordata Rydb.
    Betula pumila L.*+
        bog birch, dwarf birch, swamp birch
             Betula borealis Spach
             Betula glandulifera (Regel) B.T.Butler
             Betula glandulosa Michx. var. glandulifera (Regel) Gleason
             Betula glandulosa Michx. var. hallii (T.J.Howell) C.L.Hitchc.
             Betula hallii T.J.Howell
             Betula nana L. var. glandulifera (Regel) B.Boivin
             Betula pubescens Ehrh. subsp. borealis
             Betula pumila L. var. glandulifera Regel
             Betula pumila L. var. glabra Regel
             Betula pumila L. var. pumila
             Betula pumila L. var. renifolia Fernald
  Genus: Carpinus
    Carpinus caroliniana Walter subsp. virginiana*+
        American hornbeam, blue-beech, hornbeam, ironwood
             Carpinus betulus L. var. virginiana Marshall
             Carpinus caroliniana Walter var. virginiana (Marshall) Fernald
             Carpinus virginiana (Marshall) Sudw. 1893, not Miller 1768
  Genus: Corylus
    Corylus americana Walter*+
        American hazelnut
             Corylus americana Walter f. missouriensis (A.DC.) Fernald
             Corylus americana Walter var. altior Fernald
             Corylus americana Walter var. indehiscens E.J.Palmer & Steyerm.
             Corylus americana Walter var. missourensis A.DC.
    Corylus cornuta Marshall subsp. cornuta*+
        beaked hazelnut
             Corylus cornuta Marshall var. cornuta
             Corylus cornuta Marshall var. megaphylla Vict. & J.Rousseau
             Corylus rostrata Aiton
  Genus: Ostrya
    Ostrya virginiana (Mill.) K.Koch*+
        eastern hop-hornbeam, ironwood
             Carpinus virginiana Mill.
             Ostrya virginica Willd. var. glandulosa Spach
             Ostrya virginiana (Mill.) K.Koch f. glandulosa (Spach) J.F.Macbr.
             Ostrya virginiana (Mill.) K.Koch f. virginiana
             Ostrya virginiana (Mill.) K.Koch subsp. lasia
             Ostrya virginiana (Mill.) K.Koch var. glandulosa (Spach) Sarg.
             Ostrya virginiana (Mill.) K.Koch var. lasia Fernald
             Ostrya virginiana (Mill.) K.Koch var. virginiana
Family: Boraginaceae
  Genus: Cynoglossum
    Cynoglossum boreale Fernald*+
        northern wild comfrey
             Cynoglossum virginianum L. var. boreale (Fernald) Cooperr.
  Genus: Hackelia
    Hackelia deflexa (Wahlenb.) Opiz var. americana (A.Gray) Fernald & I.M.Johnst.*+
        American stickseed, cliff stickseed, nodding stickseed
             Echinospermum deflexum (Wahlenb.) Lehm. var. americanum A.Gray
             Hackelia americana (A.Gray) Fernald
             Hackelia deflexa (Wahlenb.) Opiz subsp. americana
             Lappula americana (A.Gray) Rydb.
             Lappula deflexa (Wahlenb.) Garcke subsp. americana
             Lappula deflexa (Wahlenb.) Garcke var. americana (A.Gray) Greene
  Genus: Lappula
    Lappula squarrosa (Retz.) Durmort.+
        European stickseed, spiny stickseed, two-row stickseed
             Echinospermum fremontii Torr.
             Lappula echinata Gilib.
             Lappula erecta A.Nelson
             Lappula fremontii (Torr.) Greene
             Lappula lappula (L.) H.Karst.
             Lappula myosotis Moench
             Lappula squarrosa (Retz.) Durmort. var. erecta (A.Nelson) Dorn
             Myosotis squarrosa Retz.
  Genus: Lithospermum
    Lithospermum caroliniense (Walter ex J.F.Gmel.) MacMill. subsp. croceum*+
        Carolina puccoon, hairy puccoon, plains puccoon
             Batschia gmelinii Michx.
             Lithospermum caroliniense (Walter ex J.F.Gmel.) MacMill. var. croceum (Fernald) Cronquist
             Lithospermum croceum Fernald
             Lithospermum gmelinii (Michx.) Hitchc.
  Genus: Mertensia
    Mertensia paniculata (Aiton) G.Don var. paniculata *+
        northern bluebells, tall lungwort
             Mertensia palmeri A.Nelson & J.F.Macbr.
    Mertensia virginica (L.) Pers. ex Link*+
        eastern bluebells, Virginia bluebells, Virginia cowslip
  Genus: Myosotis
    Myosotis arvensis (L.) Hill*+
        field forget-me-not, field scorpion-grass
             Myosotis scorpioides L. var. arvensis L.
    Myosotis scorpioides L.*+
        common forget-me-not, forget-me-not, true forget-me-not, water scorpion-grass
             Myosotis palustris (L.) Hill
    Myosotis sylvatica Ehrh. ex Hoffm.*+
        garden forget-me-not, woodland forget-me-not
  Genus: Symphytum
    Symphytum officinale L.*+
        common comfrey
             Symphytum officinale L. subsp. uliginosum
             Symphytum uliginosum J.Kern.
Family: Brassicaceae
  Genus: Alliaria
    Alliaria petiolata (M.Bieb.) Cavara & Grande*+
        garlic mustard
             Alliaria alliaria (L.) Britton
             Alliaria officinalis Andrz. ex M.Bieb.
             Arabis petiolata M.Bieb.
             Erysimum alliaria L.
             Sisymbrium alliaria (L.) Scop.
  Genus: Arabis
    Arabis divaricarpa A.Nelson*+
        spreading-pod rock-cress
             Arabis acutina Greene
             Arabis brachycarpa (Torr. & A.Gray) Britton
             Arabis confinis S.Watson
             Arabis confinis S.Watson var. interposita (Greene) Welsh & Reveal
             Arabis divaricarpa A.Nelson var. dechamplainii B.Boivin
             Arabis divaricarpa A.Nelson var. interposita (Greene) Rollins
             Arabis divaricarpa A.Nelson var. stenocarpa M.Hopkins
             Arabis divaricarpa A.Nelson var. typica Rollins
             Arabis interposita Greene
             Arabis X divaricarpa A.Nelson (pro sp.) X
             Boechera divaricarpa (A.Nelson) A.Löve & D.Löve
             Turritis brachycarpa Torr. & A.Gray
    Arabis drummondii A.Gray+
        Drummond's rock-cress
             Arabis connexa Greene
             Arabis drummondii A.Gray var. connexa (Greene) Fernald
             Arabis drummondii A.Gray var. oxyphylla (Greene) M.Hopkins
             Arabis oxyphylla Greene
             Boechera drummondii (A.Gray) A.Löve & D.Löve
             Erysimum drummondii (A.Gray) Kuntze
             Turritis drummondii (A.Gray) Lunell
    Arabis glabra (L.) Bernh.*+
        tower mustard, tower rock-cress
             Arabis glabra (L.) Bernh. var. glabra
             Turritis glabra L.
    Arabis hirsuta (L.) Scop. var. pycnocarpa (M.Hopkins) Rollins+
        cream-flower rock-cress, hairy rock-cress
             Arabis hirsuta (L.) Scop. subsp. pycnocarpa
             Arabis ovata sensu Small, non Michx.
             Arabis pycnocarpa M.Hopkins
             Arabis pycnocarpa M.Hopkins var. pycnocarpa
    Arabis lyrata L.*+
        lyrate rock-cress, sand cress
             Arabis ambigua DC. var. glabra DC.
             Arabis lyrata L. var. glabra (DC.) M.Hopkins
             Arabis lyrata L. var. lyrata
             Arabis lyrata L. var. occidentalis S.Watson
             Arabis lyrata L. var. typica M.Hopkins
             Arabis lyrata L. f. parvisiliqua M.Hopkins var. typica M.Hopkins
  Genus: Armoracia
    Armoracia lacustris (A.Gray) Al-Shehbaz & V.M.Bates*+
        lake cress
             Armoracia aquatica (Eaton) Wiegand
             Nasturtium lacustre A.Gray
             Neobeckia aquatica (Eaton) Greene
             Radicula aquatica (Eaton) B.L.Rob.
             Rorippa americana (A.Gray) Britton
             Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.
    Armoracia rusticana P.Gaertn., B.Mey. & Scherb.*+
        horseradish
             Armoracia armoracia (L.) Cockerell ex Daniels
             Armoracia lapathifolia Gilib.
             Cochlearia armoracia L.
             Nasturtium armoracia (L.) Fr.
             Radicula armoracia (L.) B.L.Rob.
             Rorippa armoracia (L.) Hitchc.
  Genus: Barbarea
    Barbarea vulgaris R.Br.*+
        garden yellow-rocket, winter-cress, yellow-rocket
             Barbarea arcuata (Opiz ex J.Presl & C.Presl) Rchb.
             Barbarea stricta Andrz.
             Barbarea vulgaris R.Br. var. arcuata (Opiz ex J.Presl & C.Presl) Fr.
             Barbarea vulgaris R.Br. var. brachycarpa Rouy & Foucaud
             Barbarea vulgaris R.Br. var. longisiliquosa Carion
             Barbarea vulgaris R.Br. var. sylvestris Fr.
             Campe barbarea (L.) W.Wight ex Piper
             Campe stricta (Andrz.) W.Wight ex Piper
  Genus: Berteroa
    Berteroa incana (L.) DC.*+
        hoary false madwort, hoary-alyssum
             Alyssum incanum L.
  Genus: Capsella
    Capsella bursa-pastoris (L.) Medik.*+
        shepherd's-purse
             Bursa bursa-pastoris (L.) Britton
             Bursa bursa-pastoris (L.) Britton var. bifida Crép.
             Bursa gracilis Gren.
             Bursa rubella (Reut.) Druce
             Capsella bursa-pastoris (L.) Medik. f. arachnoidea Hus
             Capsella rubella Reut.
             Thlaspi bursa-pastoris L.
  Genus: Cardamine
    Cardamine concatenata (Michx.) O.Schwarz*+
        cut-leaved toothwort, five-parted toothwort
             Cardamine laciniata (Muhl. ex Willd.) A.W.Wood
             Dentaria concatenata Michx.
             Dentaria concatenata Michx. var. coalescens Fernald
             Dentaria laciniata Muhl. ex Willd.
             Dentaria laciniata Muhl. ex Willd. var. integra (O.E.Schulz) Fernald
    Cardamine maxima (Nutt.) A.W.Wood*+
        large toothwort, three-leaved toothwort
             Cardamine X maxima (Nutt.) A.W.Wood X
             Dentaria maxima Nutt.
    Cardamine parviflora L. var. arenicola (Britton) O.E.Schulz*+
        dry-land bitter-cress, sand bitter-cress, small-flowered bitter-cress
             Cardamine arenicola Britton
    Cardamine pensylvanica Muhl. ex Willd.*+
        Pennsylvania bitter-cress
             Cardamine hirsuta L. var. pensylvanica Muhl. ex Willd.
             Cardamine pensylvanica Muhl. ex Willd. var. brittoniana Farw.
  Genus: Erucastrum
    Erucastrum gallicum (Willd.) O.E.Schulz*+
        common dog-mustard, dog-mustard
             Brassica erucastrum L.
             Erucastrum pollichii Schimp. & Spenn.
             Sisymbrium gallicum Willd.
  Genus: Erysimum
    Erysimum cheiranthoides L.*+
        worm-seed mustard, worm-seed wallflower
             Cheirinia cheiranthoides (L.) Link
             Erysimum cheiranthoides L. subsp. altum
  Genus: Hesperis
    Hesperis matronalis L.*+
        dame's rocket
  Genus: Lepidium
    Lepidium campestre (L.) R.Br.*+
        fieldcress, field pepper-weed
             Neolepia campestris (L.) W.A.Weber
             Thlaspi campestre L.
    Lepidium densiflorum Schrad. var. densiflorum +
        prairie pepper-weed, small peppergrass
             Lepidium apetulum auct. non Willd.
             Lepidium densiflorum Schrad. var. typicum Thell.
             Lepidium neglectum Thell.
             Lepidium texanum Buckley
  Genus: Nasturtium
    Nasturtium officinale R.Br.*+
        watercress
             Nasturtium nasturtium-aquaticum (L.) H.Karst.
             Nasturtium officinale R.Br. f. nanum Glück
             Nasturtium officinale R.Br. f. siifolium Rchb.
             Nasturtium officinale R.Br. f. submersum Glück
             Nasturtium officinale R.Br. f. terrestre Glück
             Nasturtium officinale R.Br. var. siifolium (Rchb.) W.D.J.Koch
             Radicula nasturtium-aquaticum (L.) Britten & Rendle
             Rorippa nasturtium-aquaticum (L.) Hayek
             Sisymbrium nasturtium-aquaticum L.
  Genus: Rorippa
    Rorippa palustris (L.) Besser subsp. fernaldiana+
        Fernald's yellow-cress, marsh-cress
             Rorippa hispida (Desv.) Britton var. glabrata Lunell
             Rorippa islandica (Oeder) Borbás subsp. fernaldiana
             Rorippa islandica (Oeder) Borbás var. fernaldiana Butters & Abbe
             Rorippa islandica (Oeder) Borbás var. glabra (O.E.Schulz) Welsh & Reveal
             Rorippa islandica (Oeder) Borbás var. glabrata (Lunell) Butters & Abbe
             Rorippa palustris (L.) Besser subsp. glabra
             Rorippa palustris (L.) Besser var. fernaldiana (Butters & Abbe) Stuckey subsp. glabra
             Rorippa palustris (L.) Besser var. cernua (Nutt.) Stuckey
             Rorippa palustris (L.) Besser var. dictyota (Greene) Stuckey
             Rorippa palustris (L.) Besser var. elongata Stuckey
             Rorippa palustris (L.) Besser var. fernaldiana (Butters & Abbe) Stuckey
             Rorippa palustris (L.) Besser var. glabrata (Lunell) Stuckey
             Rorippa palustris (L.) Besser var. glabra (O.E.Schulz) Stuckey
    Rorippa palustris (L.) Besser subsp. hispida+
        hispid marsh-cress, hispid yellow-cress
             Brachiolobos hispidus Desv.
             Radicula hispida (Desv.) Britton
             Rorippa hispida (Desv.) Britton
             Rorippa islandica (Oeder) Borbás var. hispida (Desv.) Butters & Abbe
             Rorippa palustris (L.) Besser var. hispida (Desv.) Rydb.
  Genus: Sinapis
    Sinapis arvensis L.*+
        California rape, charlock mustard
             Brassica arvensis (L.) Rabenh.
             Brassica kaber (DC.) L.C.Wheeler
             Brassica kaber (DC.) L.C.Wheeler var. pinnatifida (Stokes) L.C.Wheeler
             Brassica kaber (DC.) L.C.Wheeler var. schkuhriana (Rchb.) L.C.Wheeler
  Genus: Thlaspi
    Thlaspi arvense L.*+
        field pennycress
Family: Cabombaceae
  Genus: Brasenia
    Brasenia schreberi J.F.Gmel.*+
        water-shield
             Brasenia peltata Pursh
Family: Callitrichaceae
  Genus: Callitriche
    Callitriche heterophylla Pursh+
        large water-starwort
             Callitriche anceps Fernald
             Callitriche heterophylla Pursh subsp. heterophylla
    Callitriche palustris L.*+
        common water-starwort, vernal water-starwort
             Callitriche palustris L. var. verna (L.) Fenley ex Jeps.
             Callitriche verna L.
Family: Campanulaceae
  Genus: Campanula
    Campanula aparinoides Pursh*+
        marsh bellflower
    Campanula aparinoides Pursh var. grandiflora Holz.+
        marsh bellflower
             Campanula aparinoides Pursh var. uliginosa (Rydb.) Gleason
             Campanula uliginosa Rydb.
    Campanula latifolia L.*+
        giant bellflower
    Campanula persicifolia L.*+
        peach-leaved bellflower
    Campanula rapunculoides L.*+
        creeping bellflower, European bellflower, rampion bellflower, rover bellflower
             Campanula rapunculoides L. var. ucranica (Besser) K.Koch
    Campanula rotundifolia L.*+
        bluebell, bluebell bellflower, harebell
             Campanula alaskana (A.Gray) W.Wight ex J.P.Anderson
             Campanula dubia A.DC.
             Campanula heterodoxa Bong.
             Campanula intercedens Witasek
             Campanula petiolata A.DC.
             Campanula rotundifolia L. var. alaskana A.Gray
             Campanula rotundifolia L. var. intercedens (Witasek) Farw.
             Campanula rotundifolia L. var. lancifolia Mert. & W.D.J.Koch
             Campanula rotundifolia L. var. petiolata (A.DC.) J.K.Henry
             Campanula rotundifolia L. var. velutina A.DC.
             Campanula sacajaweana M.Peck
    Campanula trachelium L.+
        bat-in-the-belfry, throat-wort
Family: Cannabaceae
  Genus: Humulus
    Humulus lupulus L. var. lupuloides E.Small+
        common hop, hop
             Humulus americanus Nutt.
             Humulus lupulus L. subsp. americanus
Family: Caprifoliaceae
  Genus: Diervilla
    Diervilla lonicera Mill.*+
        northern bush-honeysuckle
             Diervilla diervilla (L.) MacMill.
             Diervilla lonicera Mill. var. hypomalaca Fernald
             Diervilla lonicera Mill. var. lonicera
             Diervilla trifida Moench
  Genus: Linnaea
    Linnaea borealis L. subsp. americana*+
        twinflower
             Linnaea americana Forbes
             Linnaea borealis L. var. americana (Forbes) Rehder
  Genus: Lonicera
    Lonicera canadensis W.Bartram ex Marshall*+
        American fly honeysuckle
             Xylosteon ciliatum Pursh
    Lonicera hirsuta Eaton*+
        hairy honeysuckle
             Lonicera hirsuta Eaton var. interior Gleason
    Lonicera tatarica L.*+
        Tartarian honeysuckle
             Lonicera tatarica L. f. albiflora (DC.) House
             Lonicera tatarica L. var. xanthocarpa Endl.
             Xylosteum tataricum (L.) Medik.
    Lonicera villosa (Michx.) Schult.*+
        mountain fly honeysuckle
             Lonicera caerulea L. var. villosa (Michx.) Torr. & A.Gray
    Lonicera xylosteum L.*+
        dwarf honeysuckle, European fly honeysuckle
    Lonicera X bella Zabel X *+
        showy bush honeysuckle, white-bell honeysuckle
  Genus: Sambucus
    Sambucus racemosa L. var. pubens (Michx.) Koehne subsp. pubens*+
        red elderberry, red-berried elder, scarlet elderberry
             Sambucus pubens Michx.
             Sambucus pubens Michx. f. dissecta (Britton) Schwer.
             Sambucus racemosa L. var. pubens (Michx.) Koehne
  Genus: Triosteum
    Triosteum aurantiacum E.P.Bicknell var. aurantiacum +
        early horse-gentian, orange-fruit horse-gentian
             Triosteum aurantiacum E.P.Bicknell f. glaucescens (Wiegand) F.C.Lane
             Triosteum aurantiacum E.P.Bicknell var. glaucescens Wiegand
             Triosteum perfoliatum L. var. aurantiacum (E.P.Bicknell) Wiegand
  Genus: Viburnum
    Viburnum acerifolium L.*+
        dockmackie, maple-leaved arrow-wood, maple-leaved viburnum
             Viburnum acerifolium L. f. collinsii Rouleau
             Viburnum acerifolium L. f. eburneum House
             Viburnum acerifolium L. f. ovatum Rehder
             Viburnum acerifolium L. var. acerifolium
    Viburnum lentago L.*+
        nannyberry, sheepberry
             Viburnum X vetteri Zabel X
    Viburnum opulus L. subsp. trilobum*+
        American cranberry-bush, cranberry viburnum, high-bush cranberry
             Viburnum opulus L. var. americanum Aiton
             Viburnum opulus L. var. trilobum (Marshall) McAtee
             Viburnum trilobum Marshall
    Viburnum rafinesquianum Schult.*+
        arrow-wood, downy arrow-wood
    Viburnum rafinesquianum Schult. var. affine (Bush ex C.K.Schneid.) House+
        arrow-wood, downy arrow-wood
             Viburnum affine Bush ex C.K.Schneid.
             Viburnum affine Bush ex C.K.Schneid. var. affine
             Viburnum affine Bush ex C.K.Schneid. var. australe (C.V.Morton) McAtee
             Viburnum australe C.V.Morton
Family: Caryophyllaceae
  Genus: Arenaria
    Arenaria macrophylla Hook.*+
        large-leaved sandwort
             Moehringia macrophylla (Hook.) Fenzl
    Arenaria serpyllifolia L.*+
        thyme-leaved sandwort
             Arenaria leptoclados (Rchb.) Guss.
             Arenaria serpyllifolia L. subsp. leptoclados
             Arenaria serpyllifolia L. subsp. serpyllifolia
             Arenaria serpyllifolia L. var. serpyllifolia
             Arenaria serpyllifolia L. var. tenuior Mert. & W.D.J.Koch
  Genus: Cerastium
    Cerastium arvense L.*+
        field chickweed, starry grasswort
             Cerastium alsophilum Greene
             Cerastium angustatum Greene
             Cerastium arvense L. f. oblongifolium (Torr.) Pennell
             Cerastium arvense L. subsp. strictum
             Cerastium arvense L. var. angustifolium Fenzl
             Cerastium arvense L. var. arvense
             Cerastium arvense L. var. latifolium Fenzl
             Cerastium arvense L. var. purpurascens B.Boivin
             Cerastium arvense L. var. villosum (Muhl. ex Darl.) Hollick & Britton
             Cerastium arvense L. var. viscidulum Gremli
             Cerastium campestre Greene
             Cerastium confertum Greene
             Cerastium effusum Greene
             Cerastium elongatum Pursh
             Cerastium graminifolium Rydb.
             Cerastium latifolium Fenzl
             Cerastium nitidum Greene
             Cerastium oblongifolium Torr.
             Cerastium occidentale Greene
             Cerastium oreophilum Greene
             Cerastium patulum Greene
             Cerastium scopulorum Greene
             Cerastium sonnei Greene
             Cerastium strictum L.
             Cerastium subulatum Greene
             Cerastium tenuifolium Pursh
             Cerastium vestitum Greene
             Cerastium villosum Muhl. ex Darl.
    Cerastium fontanum Baumg. emend Jalas subsp. vulgare*+
        big mouse-ear chickweed, common chickweed, common mouse-ear, mouse-ear chickweed
             Cerastium adsurgens Greene
             Cerastium fontanum Baumg. subsp. holosteoides
             Cerastium fontanum Baumg. subsp. triviale
             Cerastium holosteoides Fr.
             Cerastium holosteoides Fr. var. vulgare (Hartm.) Hyl.
             Cerastium triviale Link
             Cerastium vulgatum L. 1762, non 1755
             Cerastium vulgare Hartm.
             Cerastium vulgatum L. f. glandulosum (Boenn.) Druce var. hirsutum Fr.
             Cerastium vulgatum L. f. hirsutum var. hirsutum Fr.
             Cerastium vulgatum L. var. hirsutum Fr.
             Cerastium vulgatum L. var. holosteoides (Fr.) Wahlenb.
  Genus: Dianthus
    Dianthus armeria L.*+
        Deptford pink
    Dianthus barbatus L.*+
        sweet-William
    Dianthus deltoides L.*+
        maiden pink, meadow pink
  Genus: Gypsophila
    Gypsophila paniculata L.*+
        baby's-breath, baby's-breath gypsophila, common baby's-breath
  Genus: Lychnis
    Lychnis chalcedonica L.*+
        Maltese cross, scarlet lychnis
  Genus: Saponaria
    Saponaria officinalis L.*+
        bouncing-bet, soapwort
             Lychnis saponaria Jess.
  Genus: Scleranthus
    Scleranthus annuus L.*+
        annual knawel, German knotgrass
  Genus: Silene
    Silene latifolia Poir. subsp. alba*+
        bladder campion, white campion, white cockle
             Lychnis alba Mill.
             Lychnis pratensis Rafn
             Lychnis vespertina Sibth.
             Lychnis X loveae B.Boivin X
             Melandrium album (Mill.) Garcke
             Silene alba (Mill.) E.H.L.Krause
             Silene pratensis (Rafn) Godr. & Gren.
             Silene pratensis (Rafn) Godr. & Gren. subsp. pratensis
    Silene noctiflora L.*+
        night-flowering catchfly, sticky cockle
             Melandrium noctiflorum (L.) Fr.
    Silene vulgaris (Moench) Garcke*+
        bladder-campion, maiden's-tears
             Oberna commutata (Guss.) Ikonn.
             Silene cucubalus Wibel
             Silene inflata (Salisb.) Sm.
             Silene latifolia (Mill.) Britten & Rendle
  Genus: Spergula
    Spergula arvensis L.*+
        corn spurry
  Genus: Spergularia
    Spergularia rubra (L.) J.Presl & C.Presl*+
        red sand spurry, roadside sand spurry
             Arenaria rubra L.
             Lepigonum rubrum (L.) Wahlenb.
             Lepigonum rubrum (L.) Wahlenb. var. perennans Kindb.
             Spergularia rubra (L.) J.Presl & C.Presl var. perennans (Kindb.) B.L.Rob.
             Tissa rubra (L.) Britton
             Tissa rubra (L.) Britton var. perennans (Kindb.) Greene
  Genus: Stellaria
    Stellaria aquatica (L.) Scop.*+
        giant chickweed, water chickweed
             Alsine aquatica (L.) Britton
             Cerastium aquaticum L.
             Malachium aquaticum (L.) Fr.
             Myosoton aquaticum (L.) Moench
    Stellaria borealis Bigelow subsp. borealis+
        boreal starwort, northern starwort
             Alsine borealis (Bigelow) Britton
             Spergulastrum lanceolatum Michx.
             Stellaria borealis Bigelow var. borealis
             Stellaria borealis Bigelow var. floribunda Fernald
             Stellaria borealis Bigelow var. isophylla Fernald
             Stellaria calycantha (Ledeb.) Bong. subsp. interior
             Stellaria calycantha (Ledeb.) Bong. var. floribunda (Fernald) Fernald
             Stellaria calycantha (Ledeb.) Bong. var. isophylla (Fernald) Fernald
             Stellaria calycantha (Ledeb.) Bong. var. latifolia B.Boivin
             Stellaria calycantha (Ledeb.) Bong. var. laurentiana Fernald
    Stellaria graminea L.*+
        common stitchwort, grass-like starwort, starwort
             Alsine graminea (L.) Britton
    Stellaria longifolia Muhl. ex Willd.*+
        long-leaved stitchwort
    Stellaria longifolia Muhl. ex Willd. var. atrata J.W.Moore+
        long-leaved stitchwort
             Stellaria atrata (J.W.Moore) B.Boivin
    Stellaria longifolia Muhl. ex Willd. var. longifolia +
        long-leaved stitchwort
             Alsine longifolia (Muhl. ex Willd.) Britton
    Stellaria media (L.) Vill.*+
        common chickweed
             Alsine media L.
Family: Celastraceae
  Genus: Celastrus
    Celastrus scandens L.*+
        American bittersweet, climbing bittersweet
Family: Ceratophyllaceae
  Genus: Ceratophyllum
    Ceratophyllum demersum L.*+
        coon's-tail, hornwort
             Ceratophyllum apiculatum Cham.
             Ceratophyllum demersum L. var. apiculatum (Cham.) Asch.
             Ceratophyllum demersum L. var. apiculatum (Cham.) Garcke
    Ceratophyllum echinatum A.Gray+
        prickly hornwort, spiny hornwort
             Ceratophyllum demersum L. var. echinatum (A.Gray) A.Gray
             Ceratophyllum submersum L. var. echinatum (A.Gray) Wilmot-Dear
Family: Chenopodiaceae
  Genus: Chenopodium
    Chenopodium album L.*+
        common lamb's-quarters, lamb's-quarters, pigweed
             Chenopodium album L. f. lanceolatum (Muhl. ex Willd.) Schinz & Thell.
             Chenopodium album L. var. album
             Chenopodium album L. var. lanceolatum (Muhl. ex Willd.) Coss. & Germ.
             Chenopodium album L. var. missouriense (Aellen) Bassett & Crompton
             Chenopodium album L. var. stevensii Aellen
             Chenopodium lanceolatum Muhl. ex Willd.
             Chenopodium missouriense Aellen
    Chenopodium capitatum (L.) Ambrosi var. capitatum *+
        blite goosefoot, Indian ink, Indian-paint, strawberry-blite,
             Blitum capitatum L.
    Chenopodium simplex (Torr.) Raf.*+
        maple-leaved goosefoot
             Chenopodium gigantospermum Aellen
             Chenopodium hybridum auct. non L.
             Chenopodium hybridum L. subsp. gigantospermum
             Chenopodium hybridum L. var. gigantospermum (Aellen) Rouleau
             Chenopodium hybridum L. var. simplex Torr.
  Genus: Corispermum
    Corispermum americanum (Nutt.) Nutt. var. americanum *+
        American bugseed
             Corispermum hyssopifolium L. var. americanum Nutt.
             Corispermum orientale auct. non Lam.
             Corispermum simplicissimum Lunell
             Polycnemum americanum Nutt.
    Corispermum villosum Rydb.
        hairy bugseed
             Corispermum emarginatum Rydb.
             Corispermum hyssopifolium L. var. emarginatum (Rydb.) B.Boivin
             Corispermum orientale Lam. var. emarginatum (Rydb.) J.F.Macbr.
  Genus: Cycloloma
    Cycloloma atriplicifolium (Spreng.) J.M.Coult.*+
        winged pigweed
             Cyclolepis platyphylla (Michx.) Moq.
             Cycloloma platyphyllum (Michx.) Moq.
             Kochia atriplicifolia (Spreng.) Roth
             Salsola atriplicifolia Spreng.
             Salsola platyphylla Michx.
  Genus: Salsola
    Salsola tragus L.*+
        prickly Russian thistle, Russian thistle, tumbleweed
             Salsola australis R.Br.
             Salsola iberica (Sennen & Pau) Botsch. ex Czerep.
             Salsola kali L. subsp. ruthenica
             Salsola kali L. subsp. tragus
             Salsola kali L. var. tenuifolia Tausch ex Moq.
             Salsola pestifer A.Nelson
             Salsola ruthenica Iljin
Family: Cistaceae
  Genus: Hudsonia
    Hudsonia tomentosa Nutt. var. tomentosa *+
        false heather, woolly beach-heather
Family: Convolvulaceae
  Genus: Calystegia
    Calystegia sepium (L.) R.Br.*+
        hedge bindweed, hedge false bindweed
             Calystegia sepium (L.) R.Br. subsp. americana
             Calystegia sepium (L.) R.Br. subsp. angulata
             Calystegia sepium (L.) R.Br. subsp. sepium
             Calystegia sepium (L.) R.Br. var. angulata (Brummitt) N.H.Holmgren
             Calystegia sepium (L.) Pursh var. pubescens A.Gray
             Calystegia sepium (L.) R.Br. var. repens (L.) A.Gray
             Convolvulus nashii House
             Convolvulus repens L.
             Convolvulus sepium L.
             Convolvulus sepium L. var. americanus Sims
             Convolvulus sepium L. var. communis R.M.Tryon
             Convolvulus sepium L. var. repens (L.) A.Gray
             Convolvulus sepium L. var. sepium
    Calystegia spithamaea (L.) Pursh*+
        low bindweed, low false bindweed
             Calystegia spithamaea (L.) Pursh subsp. spithamaea
             Calystegia spithamaea (L.) Pursh subsp. stans
             Convolvulus sepium L. var. pubescens (A.Gray) Fernald
             Convolvulus spithamaeus L.
             Convolvulus spithamaeus L. subsp. spithamaeus
             Convolvulus spithamaeus L. subsp. stans
             Convolvulus spithamaeus L. var. pubescens (A.Gray) Fernald
             Convolvulus spithamaeus L. var. stans (Michx.) Fogelberg
             Convolvulus stans Michx.
Family: Cornaceae
  Genus: Cornus
    Cornus alternifolia L.f.*+
        alternate-leaved dogwood, pagoda dogwood
             Swida alternifolia (L.f.) Small
    Cornus canadensis L.*+
        bunchberry, bunchberry dogwood, dwarf cornel
             Chamaepericlymenum canadense (L.) Asch. & Graebn.
             Cornella canadensis (L.) Rydb.
             Cornus canadensis L. f. dutillyi Lepage
             Cornus canadensis L. f. elongata M.Peck
             Cornus canadensis L. var. dutillyi (Lepage) B.Boivin
             Cornus canadensis L. var. intermedia Farr
    Cornus racemosa Lam.*+
        gray dogwood, northern swamp dogwood, panicled dogwood
             Cornus candidissima Marshall, non Mill.
             Cornus foemina Mill., sensu Drescher (1933)
             Cornus foemina Mill. subsp. racemosa
             Cornus paniculata L'Hér.
             Swida racemosa (Lam.) Moldenke
    Cornus rugosa Lam.*+
        round-leaved dogwood
             Cornus circinata L'Hér.
             Swida rugosa (Lam.) Rydb.
    Cornus stolonifera Michx.*+
        red osier dogwood
             Cornus alba L., pro parte
             Cornus alba L. subsp. stolonifera
             Cornus alba L. var. baileyi (J.M.Coult. & W.H.Evans) B.Boivin
             Cornus alba L. var. californica (C.A.Mey.) B.Boivin
             Cornus alba L. var. interior (Rydb.) B.Boivin
             Cornus baileyi J.M.Coult. & W.H.Evans
             Cornus interior (Rydb.) N.Petersen
             Cornus instolonea A.Nelson
             Cornus sericea L.
             Cornus sericea L. subsp. sericea
             Cornus sericea L. subsp. stolonifera
             Cornus sericea L. var. interior (Rydb.) H.St.John
             Cornus stolonifera Michx. var. baileyi (J.M.Coult. & W.H.Evans) Drescher
             Cornus stolonifera Michx. var. interior (Rydb.) H.St.John
             Cornus X californica C.A.Mey. X
             Swida baileyi (J.M.Coult. & W.H.Evans) Rydb.
             Swida interior Rydb.
             Swida instolonea (A.Nelson) Rydb.
             Swida stolonifera (Michx.) Rydb.
Family: Crassulaceae
  Genus: Jovibarba
    Jovibarba heuffelii (Schott) A.Löve & D.Löve+
        hen-and-chickens
             Sempervivum heuffelii Schott
Family: Cucurbitaceae
  Genus: Echinocystis
    Echinocystis lobata (Michx.) Torr. & A.Gray*+
        balsam-apple, wild-cucumber
             Micrampelis lobata (Michx.) Greene
             Sicyos lobata Michx.
Family: Cupressaceae
  Genus: Juniperus
    Juniperus communis L. var. depressa Pursh*+
        common juniper
             Juniperus canadensis Lodd. ex Burgsd.
             Juniperus communis L. subsp. depressa
             Juniperus depressa (Pursh) Raf.
    Juniperus horizontalis Moench*+
        creeping juniper, trailing juniper
             Juniperus horizontalis Moench var. douglasii hort.
             Juniperus horizontalis Moench var. variegata Beissn.
             Juniperus hudsonica Forbes
             Juniperus prostrata Pers.
             Juniperus repens Nutt.
             Juniperus virginiana L. var. prostrata (Pers.) Torr.
             Sabina horizontalis (Moench) Antoine
             Sabina prostrata (Pers.) Antoine
  Genus: Thuja
    Thuja occidentalis L.*+
        eastern arborvitae, northern white-cedar
Family: Cuscutaceae
  Genus: Cuscuta
    Cuscuta gronovii Willd. ex Roem. & Schult. var. gronovii *+
        common dodder, love dodder, scald-weed, swamp dodder
             Cuscuta gronovii Willd. ex Roem. & Schult. var. latiflora Engelm.
             Cuscuta gronovii Willd. ex Roem. & Schult. var. saururi (Engelm.) MacMill.
             Cuscuta umbrosa auct. non Beyr. ex Hook.
             Grammica gronovii (Willd. ex Roem. & Schult) Hadac & Chrtek
             Grammica umbrosa auct. non (Beyr. ex Hook.) W.A.Weber
Family: Cyperaceae
  Genus: Bulbostylis
    Bulbostylis capillaris (L.) Kunth ex C.B.Clarke*+
        hair sedge, thread-leaved beak-seed
             Bulbostylis capillaris (L.) Kunth ex C.B.Clarke subsp. capillaris
             Bulbostylis capillaris (L.) Kunth ex C.B.Clarke var. crebra Fernald
             Bulbostylis capillaris (L.) Kunth ex C.B.Clarke var. isopoda Fernald
             Fimbristylis capillaris (L.) A.Gray
             Isolepis brachyphylla (Link) Schult.
             Isolepis capillaris (L.) Roem. & Schult.
             Isolepis radiciflora Steud.
             Scirpus brachyiphyllus Link
             Scirpus capillaris L.
             Scirpus muhlenbergii Spreng.
             Stenophyllus capillaris (L.) Britton
  Genus: Carex
    Carex adusta Boott*+
        brown oval sedge, lesser brown sedge
    Carex aquatilis Wahlenb. var. aquatilis *+
        long-bracted tussock sedge, water sedge
             Carex acutinella Mack.
             Carex aquatilis Wahlenb. subsp. altior
             Carex aquatilis Wahlenb. var. altior (Rydb.) Fernald
             Carex interimus Maguire
             Carex pachystoma T.Holm
             Carex suksdorfii Kük.
             Carex variabilis L.H.Bailey
    Carex arcta Boott*+
        bear sedge, northern clustered sedge
             Carex canescens L. var. oregana L.H.Bailey
             Carex canescens L. var. polystachya Boott
             Carex heleonastes L.f. var. scabriuscula Kük.
             Carex kunzei Olney
    Carex arctata Boott*+
        drooping woodland sedge
             Carex arctata Boott var. faxonii L.H.Bailey
    Carex assiniboinensis W.Boott*+
        Assiniboine sedge
    Carex aurea Nutt.*+
        elk sedge, golden sedge, golden-fruited sedge
    Carex bebbii (L.H.Bailey) Olney ex Fernald*+
        Bebb's oval sedge, Bebb's sedge
             Carex tribuloides Wahlenb. var. bebbii L.H.Bailey
    Carex bromoides Schkuhr ex Willd. subsp. bromoides*+
        brome-like sedge
             Carex bromoides Schkuhr ex Willd. var. bromoides
    Carex brunnescens (Pers.) Poir. subsp. sphaerostachya*+
        brownish sedge, green bog sedge
             Carex brunnescens (Pers.) Poir. var. gracilior Britton
             Carex brunnescens (Pers.) Poir. var. sphaerostachya (Tuck.) Kük.
             Carex buckleyi Dewey
             Carex canescens L. var. sphaerostachya Tuck.
             Carex canescens L. var. vitilis (Fr.) J.Carey
             Carex canescens L. var. vulgaris L.H.Bailey
             Carex sphaerostachya (Tuck.) Dewey
    Carex buxbaumii Wahlenb.*+
        Buxbaum's sedge
             Carex buxbaumii Wahlenb. f. heterostachya Andersson
             Carex buxbaumii Wahlenb. var. anticostensis Raymond
             Carex holmiana Mack.
             Carex polygama Schkuhr
    Carex canescens L.*+
        gray bog sedge, silvery sedge
    Carex capillaris L.*+
        hair-like sedge
             Carex capillaris L. subsp. chlorostachys
             Carex capillaris L. var. elongata Olney ex Fernald
             Carex capillaris L. var. major Blytt
             Carex chlorostachys Stev.
             Carex fuscidula V.I.Krecz. ex T.V.Egorova
    Carex castanea Wahlenb.*+
        chestnut sedge, chestnut woodland sedge
             Carex fexilis Rudge
    Carex chordorrhiza Ehrh. ex L.f.*+
        cord-root sedge, creeping sedge
    Carex comosa Boott*+
        bristly sedge
    Carex communis L.H.Bailey var. communis *+
        Colonial oak sedge, fibrous-root sedge
    Carex concinna R.Br.*+
        beautiful sedge, low northern sedge
    Carex crawfordii Fernald*+
        Crawford's oval sedge, Crawford's sedge
             Carex crawfordii Fernald var. vigens Fernald
    Carex crinita Lam. var. crinita *+
        fringed sedge
             Carex crinita Lam. var. minor Boott
             Carex crinita Lam. var. morbida J.Carey
             Carex leonura Wahlenb.
    Carex cryptolepis Mack.*+
        northeastern sedge, small yellow sedge
             Carex flava L. var. fertilis auct. non Peck
    Carex debilis Michx. var. rudgei L.H.Bailey*+
        northern weak sedge, weak sedge, white-edge sedge
             Carex allegheniensis Mack.
             Carex debilis Michx. var. intercursa Fernald
             Carex debilis Michx. var. interjecta L.H.Bailey
             Carex debilis Michx. var. puberua A.Gray
             Carex debilis Michx. var. strictior L.H.Bailey
             Carex flexuosa Muhl. ex Willd.
             Carex tenuis Rudge
    Carex deflexa Hornem. var. deflexa *+
        northern oak sedge, northern sedge
             Carex deflexa Hornem. var. deanei L.H.Bailey
    Carex deweyana Schwein. var. deweyana *+
        Dewey's sedge
             Carex deweyana Schwein. subsp. deweyana
    Carex diandra Schrank*+
        bog panicled sedge, lesser panicled sedge
    Carex disperma Dewey*+
        soft-leaf sedge, two-seeded bog sedge
             Carex tenella Schkuhr
    Carex eburnea Boott*+
        bristle-leaf sedge
    Carex echinata Murray subsp. echinata*+
        large-fruited star sedge, prickly sedge, star sedge
             Carex angustior Mack.
             Carex angustior Mack. var. gracilenta R.T.Clausen & Wahl
             Carex cephalantha (L.H.Bailey) E.P.Bicknell
             Carex echinata Murray var. angustata (J.Carey) L.H.Bailey
             Carex echinata Murray var. echinata
             Carex hawaiiensis H.St.John
             Carex josselynii (Fernald) Mack. ex Pease
             Carex leersii Willd.
             Carex muricata L. var. angustata (J.Carey) J.Carey ex Gleason
             Carex muricata L. var. cephalantha (L.H.Bailey) Wiegand & Eames
             Carex ormantha (Fernald) Mack.
             Carex phyllomanica W.Boott var. angustata (J.Carey) B.Boivin
             Carex phyllomanica W.Boott var. ormantha (Fernald) B.Boivin
             Carex svensonis Skottsb.
    Carex emoryi Dewey ex Torr.+
        Emory's sedge
             Carex millegrana T.Holm
             Carex stricta Lam. var. elongata (Boeck.) Gleason
             Carex stricta Lam. var. emoryi (Dewey) L.H.Bailey
             Caex variabilis L.H.Bailey var. elatior L.H.Bailey
             Caex virginiana Woods var. elongata Boeck.
    Carex exilis Dewey*+
        coast sedge, coastal sedge, coastal star sedge
             Carex exilis Dewey var. squamacea
    Carex foenea Willd.*+
        bronze-headed oval sedge
             Carex aenea Fernald
             Carex foenea Willd. var. foenea
    Carex gracillima Schwein.*+
        graceful sedge, purple-sheathed graceful sedge
             Carex gracillima Schwein. var. macerrima Fernald & Wiegand
    Carex granularis Muhl. ex Willd.*+
        limestone meadow sedge
             Carex granularis Muhl. ex Willd. var. granularis
             Carex granularis Muhl. ex Willd. var. haleana (Olney) Porter
             Carex haleana Olney
             Carex rectior Mack.
             Carex shriveri Britton
    Carex grayi J.Carey*+
        bur sedge, Gray's bur sedge, Gray's sedge
             Carex asa-grayi L.H.Bailey
             Carex grayi J.Carey var. hispidula A.Gray
             Carex intumescens Rudge var. globularis A.Gray
    Carex grisea Wahlenb.*+
        eastern narrow-leaved sedge, gray sedge
             Carex amphibola auct. mult.
             Carex amphibola Steud. var. turgida Fernald
    Carex gynandra Schwein.*+
        nodding sedge
             Carex crinita Lam. var. gynandra (Schwein.) Schwein. & Torr.
             Carex crinita Lam. var. simulans Fernald
             Carex gynandra Schwein. var. simulans (Fernald) Roll.-Germ.
    Carex hirtifolia Mack.*+
        hairy sedge, hairy wood sedge, pubescent sedge
    Carex houghtoniana Torr. ex Dewey*+
        Houghton's sedge, Houghton's woolly sedge
             Carex houghtonii auct. non Torr.
    Carex hystericina Muhl. ex Willd.*+
        bottlebrush sedge, porcupine sedge
             Carex hystricina Muhl. ex Willd. [orthographic "correction"]
    Carex intumescens Rudge*+
        greater bladder sedge, shining bur sedge, swollen sedge
             Carex intumescens Rudge var. fernaldii L.H.Bailey
             Carex intumescens Rudge var. intumescens
    Carex lacustris Willd.*+
        common lake sedge, rip-gut sedge
             Carex riparia M.A.Curtis var. lacustris (Willd.) Kük.
    Carex lasiocarpa Ehrh. subsp. americana*+
        American woolly-fruit sedge, narrow-leaved woolly sedge, woolly-fruit sedge
             Carex filiformis auct. non L.
             Carex lanuginosa Michx. var. americana (Fernald) B.Boivin
             Carex lasiocarpa Ehrh. var. americana Fernald
    Carex lenticularis Michx. var. lenticularis *+
        lakeshore sedge, lenticular sedge, shore sedge, tufted sedge
             Carex lenticularis Michx. var. albimontana Dewey
             Carex lenticularis Michx. var. eucycla Fernald & Wiegand
             Carex lenticularis Michx. var. merens Howe
    Carex leptonervia (Fernald) Fernald*+
        few-nerved wood sedge, nerveless woodland sedge
             Carex laxiflora Lam. var. leptonervia Fernald
             Carex laxiflora Lam. var. varians L.H.Bailey
    Carex leptalea Wahlenb. subsp. leptalea*+
        bristle-stalked sedge, slender sedge
    Carex limosa L.*+
        muck sedge, mud sedge
             Carex limosa L. var. irrigua Wahlenb.
    Carex livida (Wahlenb.) Willd.*+
        livid sedge, pale stiff sedge
             Carex livida (Wahlenb.) Willd. var. grayana (Dewey) Fernald
             Carex livida (Wahlenb.) Willd. var. radicaulis Paine
    Carex lupulina Willd.*+
        common hop sedge, hop sedge
             Carex lupulina Willd. var. pedunculata A.Gray
             Carex X macounii Dewey X
    Carex magellanica Lam. subsp. irrigua*+
        boreal bog sedge
             Carex magellanica Lam. var. irrigua (Wahlenb.) Britton, Sterns & Poggenb.
             Carex paupercula Michx.
             Carex paupercula Michx. var. brevisquama Fernald
             Carex paupercula Michx. var. irrigua (Wahlenb.) Fernald
             Carex paupercula Michx. var. pallens Fernald
    Carex merritt-fernaldii Mack.*+
        Fernald's oval sedge, Fernald's sedge
             Carex brevior (Dewey) Mack. var. pseudofestucacea Farw.
    Carex michauxiana Boeck.*+
        Michaux's sedge
             Carex abacta L.H.Bailey
             Carex rostrata Michx., 1803, non Stokes, 1787
    Carex novae-angliae Schwein.*+
        New England oak sedge, New England sedge
    Carex oligosperma Michx.*+
        few-seeded hop sedge, few-seeded sedge
    Carex ormostachya Wiegand*+
        necklace-spike sedge, necklace-spike wood sedge
             Carex laxiflora Lam. var. ormostachya (Wiegand) Gleason
    Carex ovalis Gooden.*+
        oval sedge
             Carex leporina L., misapplied
             Carex tracyi Mack.
    Carex pallescens L.*+
        pale green sedge, pale sedge
             Carex pallescens L. var. neogaea Fernald
    Carex pauciflora Lightf.*+
        few-flowered bog sedge, few-flowered sedge, star sedge
    Carex peckii Howe*+
        Peck's oak sedge, Peck's sedge
             Carex albicans auct. non Willd.
             Carex clivicola Fernald & Weath.
             Carex nigromarginata Schwein. var. elliptica (Boott) Gleason
             Carex nigromarginata Schwein. var. minor (Boott) Gleason
    Carex pedunculata Muhl. ex Willd.*+
        long-stalk sedge
    Carex pensylvanica Lam.*+
        common oak sedge, Pennsylvania sedge
             Carex marginata Willd.
             Carex pensylvanica Lam. var. glumabunda Peck
             Carex pensylvanica Lam. var. marginata (Willd.) Dewey
             Carex pensylvanica Lam. var. pensylvanica
             Carex stolonifera Schwein.
    Carex plantaginea Lam.*+
        plantain-leaved sedge, plantain-leaved wood sedge
    Carex prasina Wahlenb.*+
        drooping sedge, leek-green sedge
    Carex projecta Mack.*+
        loose-headed oval sedge, necklace sedge
    Carex pseudocyperus L.*+
        cypress-like sedge, false bristly sedge
    Carex radiata (Wahlenb.) Small*+
        eastern star sedge, straight-styled wood sedge
             Carex rosea Schkuhr ex Willd., misapplied
             Carex rosea Schkuhr ex Willd. var. radiata (Wahlenb.) Dewey
             Carex stellulata Gooden. var. radiata Wahlenb.
    Carex retrorsa Schwein.*+
        deflexed bottlebrush sedge, knot-sheath sedge, retrorse sedge
    Carex rosea Schkuhr ex Willd.*+
        curly-styled wood sedge, rosy sedge, stellate sedge
             Carex convoluta Mack.
             Carex flaccidula Steud.
             Carex rosea Schkuhr ex Willd. var. pusilla Peck & Howe
    Carex rostrata Stokes*+
        beaked sedge, northern yellow lake sedge
             Carex rostrata Stokes var. ambigens Fernald
             Carex rostrata Stokes var. rostrata
    Carex scabrata Schwein.*+
        eastern rough sedge
    Carex scoparia Schkuhr ex Willd. var. scoparia *+
        broom sedge, lance-fruited oval sedge
    Carex sprengelii Dewey ex Spreng.*+
        long-beaked sedge, Sprengel's sedge
             Carex longirostris Torr., non Krock.
    Carex sterilis Willd.*+
        dioecious sedge, fen star sedge
             Carex elachycarpa Fernald
             Carex muricata L. var. sterilis (Willd.) Gleason
             Carex X minganinsularum Raymond X
             Kobresia elachycarpa (Fernald) Fernald
    Carex stipata Muhl. ex Willd. var. stipata *+
        common fox sedge, owl-fruit sedge
             Carex stipata Muhl. ex Willd. var. crassicurta Peck
             Carex stipata Muhl. ex Willd. var. subsecuta Peck
    Carex stricta Lam.*+
        common tussock sedge, hummock sedge, tussock sedge, uptight sedge
             Carex stricta Lam. var. curtissima Peck
             Carex stricta Lam. var. strictior (Dewey) J.Carey
             Carex stricta Lam. var. stricta
             Carex stricta Lam. var. xerocarpa (S.H.Wright) Britton
             Carex strictior Dewey
             Carex xerocarpa S.H.Wright
    Carex tenuiflora Wahlenb.*+
        small-headed bog sedge, sparse-flowered sedge
    Carex tenera Dewey*+
        marsh straw sedge, narrow-leaved oval sedge, quill sedge
    Carex tenera Dewey var. tenera +
        marsh straw sedge, narrow-leaved oval sedge, quill sedge
             Carex straminea Willd. ex Schkuhr var. tenera (Dewey) Barratt
    Carex tincta (Fernald) Fernald*+
        tinged oval sedge, tinged sedge
             Carex mirabilis Dewey var. tincta Fernald
    Carex tonsa (Fernald) E.P.Bicknell var. rugosperma (Mack.) Crins+
        parachute sedge, wrinkled-seeded oak sedge
             Carex rugosperma Mack.
             Carex rugosperma Mack. var. rugosperma
             Carex umbellata sensu Fernald, non Schkuhr ex Willd.
    Carex tonsa (Fernald) E.P.Bicknell var. tonsa +
        shaved sedge, smooth-fruited oak sedge
             Carex rugosperma Mack. var. tonsa (Fernald) E.G.Voss
             Carex umbellata Schkuhr ex Willd. var. tonsa Fernald
    Carex trichocarpa Willd.*+
        hairy-fruit lake sedge, hairy-fruit sedge
    Carex trisperma Dewey*+
        three-fruited sedge, three-seeded bog sedge, three-seeded sedge
             Carex trisperma Dewey var. billingsii O.W.Knight
             Carex trisperma Dewey var. trisperma
    Carex tuckermanii Dewey*+
        bent-seeded hop sedge, Tuckerman's sedge
    Carex umbellata Schkuhr ex Willd.*+
        early oak sedge, hidden sedge, parasol sedge
             Carex abdita E.B.Bicknell
             Carex microrhyncha Mack.
             Carex umbellata Schkuhr var. umbellata
    Carex utriculata Boott*+
        common yellow lake sedge, Northwest Territory sedge
             Carex inflata Huds. var. utriculata (Boott) Druce
             Carex laevirostris (Blytt ex Fr.) Fr.
             Carex rhynchosphysa Fisch., C.A.Mey. & Avé-Lall.
             Carex rostrata Stokes var. utriculata (Boott) L.H.Bailey
    Carex vesicaria L.*+
        blister sedge, tufted lake sedge
             Carex monile Tuck.
             Carex vesicaria L. var. distenta Fr.
             Carex vesicaria L. var. jejuna Fernald
             Carex vesicaria L. var. monile (Tuck.) Fernald
             Carex vesicaria L. var. vesicaria
    Carex viridula Michx. subsp. viridula*+
        green yellow sedge, little green sedge
             Carex chlorocarpa Mack.
             Carex irregularis Schwein.
             Carex oederi Ehrh., non Retz.
             Carex oederi Retz. subsp. viridula
             Carex oederi Retz. var. recterostrata (Vict.) Dorn
             Carex oederi Retz. var. viridula (Michx.) Kük.
             Carex pulchella (Lönn.) Lindm.
             Carex scandinavica E.W.Davies
             Carex serotina Mérat
             Carex subglobosa Miel.
             Carex viridula Michx. var. pumila (Coss. & Germ.) Fernald
    Carex vulpinoidea Michx.*+
        brown fox sedge, fox sedge
             Carex microsperma Wahlenb.
             Carex multiflora Willd.
             Carex multiflora Willd. var. microsperma (Wahlenb.) Dewey
             Carex scabior Dewey
             Carex setacea Dewey
             Carex vulpinoidea Michx. var. microsperma (Wahlenb.) Dewey
             Carex vulpinoidea Michx. var. pycnocephala F.J.Herm.
             Carex vulpinoidea Michx. var. scabrior (Dewey) A.W.Wood
             Carex vulpinoidea Michx. var. segregata Farw.
             Carex vulpinoidea Michx. var. setacea (Dewey) Kük.
    Carex woodii Dewey*+
        pretty sedge, Wood's stiff sedge
             Carex colorata Mack.
             Carex tetanica Schkuhr var. woodii (Dewey) A.W.Wood
    Carex X knieskernii Dewey (pro sp.) X +
    Carex X laricina Mack. ex Bright (pro sp.) X +
             Carex laricina Mack. ex Bright
             Carex muricata L. var. laricina (Mack. ex Bright) Gleason
  Genus: Cladium
    Cladium mariscoides (Muhl.) Torr.*+
        smooth sawgrass, twig-rush
             Mariscus mariscoides (Muhl.) Kuntze
             Schoenus mariscoides Muhl.
  Genus: Cyperus
    Cyperus bipartitus Torr.*+
        shining flat sedge, slender flat sedge
             Cyperus niger Ruiz & Pav. var. rivularis (Kunth) V.E.Grant
             Cyperus rivularis Kunth
             Pycreus rivularis (Kunth) Palla
    Cyperus esculentus L. var. leptostachyus Boeck.
        field nut sedge, flat sedge, yellow nut sedge
             Chlorocyperus phymatodes (Muhl.) Palla
             Cyperus esculentus L. f. angustispicatus (Britton) Fernald
             Cyperus esculentus L. var. angustispicatus Britton
             Cyperus esculentus L. var. phymatodes (Muhl.) Kük.
             Cyperus fulvescens Liebm.
             Cyperus phymatodes Muhl.
             Cyperus repens Elliott
             Cyperus tuberosus Pursh
    Cyperus houghtonii Torr.*+
        Houghton's flat sedge
    Cyperus schweinitzii Torr.*+
        Great Plains sand sedge, Schweinitz's cyperus, Schweinitz's flat sedge
             Cyperus alterniflorus Schwein., 1824 non R.Br., 1810
             Cyperus schweinitzii Torr. var. uberior Kük.
             Mariscus schweinitzii (Torr.) T.Koyama
  Genus: Dulichium
    Dulichium arundinaceum (L.) Britton var. arundinaceum *+
        pond sedge, three-way sedge
  Genus: Eleocharis
    Eleocharis acicularis (L.) Roem. & Schult.*+
        needle spike-rush
             Eleocharis acicularis (L.) Roem. & Schult. f. acicularis
             Eleocharis acicularis (L.) Roem. & Schult. f. fluitans (Döll ex Glück) Svenson
             Eleocharis acicularis (L.) Roem. & Schult. f. inundata Svenson
             Eleocharis acicularis (L.) Roem. & Schult. f. longicaulis (Desm.) Hegi
             Eleocharis acicularis (L.) Roem. & Schult. var. acicularis
             Eleocharis acicularis (L.) Roem. & Schult. var. gracilescens Svenson
             Eleocharis acicularis (L.) Roem. & Schult. var. occidentalis Svenson
             Eleocharis acicularis (L.) Roem. & Schult. var. porcata S.G.Sm.
             Eleocharis acicularis (L.) Roem. & Schult. var. submersa (Nilsson) Svenson
             Eleocharis acicularis (L.) Roem. & Schult. var. typica Svenson
             Eleocharis acicularis (L.) Roem. & Schult. f. inundata Svenson var. typica Svenson
             Scirpus acicularis L.
    Eleocharis elliptica Kunth*+
        elliptic spike-rush
             Eleocharis capitata (L.) R.Br. var. borealis Svenson
             Eleocharis compressa Sull. var. atrata Svenson
             Eleocharis compressa Sull. var. borealis (Svenson) Drapalik & Mohlenbr.
             Eleocharis elliptica Kunth f. atrata (Svenson) Drapalik & Mohlenbr.
             Eleocharis elliptica Kunth var. atrata (Svenson) S.G.Sm.
             Eleocharis elliptica Kunth var. elliptica
             Eleocharis tenuis (Willd.) Schult. var. atrata (Svenson) B.Boivin
             Eleocharis tenuis (Willd.) Schult. var. borealis (Svenson) Gleason
    Eleocharis erythropoda Steud.*+
        bald spike-rush
             Eleocharis calva Torr.
             Eleocharis glaucescens (Willd.) Roem. & Schult.
             Scirpus glaucus Torr.
             Trichophyllum palustre (L.) Farw. var. calvum (Torr.) House
    Eleocharis mamillata (H.Lindb.) H.Lindb. subsp. mamillata*+
        mamillate spike-rush
             Scirpus mamillatus H.Lindb.
    Eleocharis obtusa (Willd.) Schult.*+
        blunt spike-rush
             Eleocharis obtusa (Willd.) Schult. var. ellipsoidalis Fernald
             Eleocharis obtusa (Willd.) Schult. var. gigantea Fernald
             Eleocharis obtusa (Willd.) Schult. var. jejuna Fernald
             Eleocharis obtusa (Willd.) Schult. var. peasei Svenson
             Eleocharis ovata (Roth) Roem. & Schult. var. obtusa (Willd.) Kük. ex Skottsb.
             Scirpus obtusus Willd.
    Eleocharis palustris (L.) Roem. & Schult.*+
        common spike-rush, marsh spike-rush
             Eleocharis calva Torr. var. australis (Nees) H.St.John
             Eleocharis mamillata auct. non H.Lindb.
             Eleocharis palustris (L.) Roem. & Schult. var. australis Nees
             Eleocharis palustris (L.) Roem. & Schult. var. major Sond.
             Eleocharis smallii Britton
             Eleocharis smallii Britton var. major (Sond.) F.Seym.
             Scirpus palustris L.
    Eleocharis robbinsii Oakes*+
        Robbins' spike-rush
  Genus: Eriophorum
    Eriophorum angustifolium Honck. subsp. angustifolium*+
        cotton-grass
             Eriophorum angustifolium Honck. var. angustifolium
             Eriophorum polystachion auct. non L.
    Eriophorum chamissonis C.A.Mey.*+
        Chamisso's cotton-grass, russet cotton-grass
             Eriophorum altaicum Meinsh. var. neogeum Raymond
             Eriophorum chamissonis C.A.Mey. f. albidum (F.Nyl.) Fernald
             Eriophorum chamissonis C.A.Mey. f. chamissonis
             Eriophorum chamissonis C.A.Mey. f. turneri Raymond
             Eriophorum chamissonis C.A.Mey. var. aquatile (Norman) Fernald
             Eriophorum rufescens Andersson
             Eriophorum russeolum Fr. f. leucothrix Blomgr.
             Eriophorum russeolum Fr. subsp. rufescens
             Eriophorum russeolum Fr. var. albidum F.Nyl.
             Eriophorum russeolum Fr. var. leucothrix (Blomgr.) Hultén
             Eriophorum russeolum Fr. var. majus Sommier
    Eriophorum gracile W.D.J.Koch ex Roth+
        slender cotton-grass
    Eriophorum tenellum Nutt.+
        cotton-grass sedge, conifer cotton-grass, few-nerved cotton-grass
             Eriophorum tenellum Nutt. var. monticola Fernald
    Eriophorum vaginatum L.*+
        tussock cotton-grass
             Eriophorum callitrix auct. non Cham.
             Eriophorum spissum Fernald
             Eriophorum spissum Fernald var. erubescens (Fernald) Fernald
             Eriophorum vaginatum L. subsp. spissum
             Eriophorum vaginatum L. var. spissum (Fernald) B.Boivin
    Eriophorum virginicum L.*+
        rusty cotton-grass, tawny cotton-grass
             Eriophorum virginicum L. f. album (A.Gray) Wiegand
             Eriophorum virginicum L. f. virginicum
    Eriophorum viridicarinatum (Engelm.) Fernald*+
        dark-scale cotton-grass, tall cotton-grass
             Eriophorum latifolium Hoppe var. viridicarinatum Engelm.
  Genus: Rhynchospora
    Rhynchospora alba (L.) Vahl*+
        white beak-rush
             Dichromena alba (L.) J.F.Macbr.
             Phaeocephalum album (L.) House
             Rhynchospora luquillensis Britton
             Schoenus albus L.
             Triodon albus (L.) Farw.
    Rhynchospora fusca (L.) W.T.Aiton*+
        brown beak-rush, sooty beak-rush
             Phaeocephalum fuscum (L.) House
             Rhynchospora alba (L.) Vahl var. fusca (L.) Vahl
             Schoenus fuscus L.
  Genus: Schoenoplectus
    Schoenoplectus acutus (Muhl. ex Bigelow) A.Löve & D.Löve var. acutus *+
        hard-stem bulrush
             Schoenoplectus lacustris (L.) Palla subsp. acutus
             Scirpus acutus Muhl. ex Bigelow
             Scirpus lacustris L., pro parte
    Schoenoplectus pungens (Vahl) Palla*+
        chair-maker's rush, common three-square bulrush
             Schoenoplectus pungens (Vahl) Palla var. badius (J.Presl & K.Presl) S.G.Sm.
             Schoenoplectus pungens (Vahl) Palla var. longispicatus (Britton) S.G.Sm.
             Schoenoplectus pungens (Vahl) Palla var. pungens
             Scirpus americanus of Amer. authors, not Pers.
             Scirpus americanus Pers. var. longispicatus Britton
             Scirpus americanus Pers. var. monophyllus (J.Presl & C.Presl) T.Koyama
             Scirpus chilensis Nees & Meyen ex Kunth
             Scirpus monophyllus J.Presl & C.Presl
             Scirpus pungens Vahl
             Scirpus pungens Vahl subsp. monophyllus
             Scirpus pungens Vahl var. longispicatus (Britton) Roy L.Taylor & MacBryde
    Schoenoplectus subterminalis (Torr.) Soják*+
        swaying bulrush, water bulrush, water club-rush
             Scirpus subterminalis Torr.
    Schoenoplectus tabernaemontani (C.C.Gmel.) Palla*+
        great bulrush, soft-stem bulrush
             Schoenoplectus lacustris (L.) Palla subsp. creber
             Schoenoplectus validus (Vahl) A.Löve & D.Löve
             Scirpus lacustris L. subsp. creber
             Scirpus lacustris L. subsp. glaucus
             Scirpus lacustris L. subsp. tabernaemontani
             Scirpus lacustris L. subsp. validus
             Scirpus lacustris L. var. tabernaemontani (C.C.Gmel.) Döll
             Scirpus tabernaemontani C.C.Gmel.
             Scirpus validus Vahl
             Scirpus validus Vahl var. creber Fernald
             Scirpus validus Vahl f. megastachyus Fernald var. creber Fernald
    Schoenoplectus torreyi (Olney) Palla+
        Torrey's bulrush, Torrey's three-square bulrush
             Scirpus torreyi Olney
  Genus: Scirpus
    Scirpus atrovirens Willd.*+
        black bulrush, dark-green bulrush
             Scirpus atrovirens Willd. f. proliferus F.J.Herm.
             Scirpus atrovirens Willd. var. atrovirens
             Scirpus atrovirens Willd. var.
    Scirpus atrocinctus Fernald*+
        black-girdled wool-grass
             Scirpus cyperinus (L.) Kunth var. brachypodus (Fernald) Gilly
    Scirpus atrocinctus Fernald X S. cyperinus (L.) Kunth+
    Scirpus cyperinus (L.) Kunth*+
        wool-grass
             Eriophorum cyperinum L.
             Scirpus cyperinus (L.) Kunth var. andrewsii (Fernald) Fernald
             Scirpus cyperinus (L.) Kunth var. condensatus Fernald
             Scirpus cyperinus (L.) Kunth var. cyperinus
             Scirpus cyperinus (L.) Kunth var. eriophorum (Michx.) Kuntze
             Scirpus cyperinus (L.) Kunth var. laxus (A.Gray) Beetle
             Scirpus cyperinus (L.) Kunth var. pelius Fernald
             Scirpus cyperinus (L.) Kunth f. condensatus (Fernald) S.F.Blake var. pelius Fernald
             Scirpus cyperinus (L.) Kunth var. rubricosus (Fernald) Gilly
             Scirpus eriophorum Michx.
             Scirpus rubricosus Fernald
    Scirpus hattorianus Makino+
        early dark-green bulrush, mosquito bulrush
             Scirpus atrovirens Willd. var. georgianus (R.M.Harper) Fernald, pro parte
             Scirpus atrovirens Willd. var. viviparus Farw.
    Scirpus microcarpus J.Presl & C.Presl*+
        panicled bulrush
             Scirpus microcarpus J.Presl & C.Presl var. longispicatus M.Peck
             Scirpus microcarpus J.Presl & C.Presl var. rubrotinctus (Fernald) M.E.Jones
             Scirpus rubrotinctus Fernald
             Scirpus rubrotinctus Fernald f. confertus (Fernald) Weath.
             Scirpus rubrotinctus Fernald var. confertus Fernald
             Scirpus sylvaticus L. var. digynus Boeck.
    Scirpus pedicellatus Fernald+
        stalked wool-grass
             Scirpus cyperinus (L.) Kunth var. pedicellatus (Fernald) Schuyler
             Scirpus pedicellatus Fernald var. pullus Fernald
  Genus: Trichophorum
    Trichophorum alpinum (L.) Pers.*+
        alpine cotton-grass, alpine club-rush
             Baeothryon alpinum (L.) T.V.Egorova
             Eriophorum alpinum L.
             Eriophorum hudsonianum Michx.
             Leucocoma alpina (L.) Rydb.
             Scirpus alpinus (L.) Dalla Torre & Sarnth., 1906
             Scirpus hudsonianus (Michx.) Fernald
             Trichophorum alpinum (L.) Pers. var. hudsonianum (Michx.) Pers.
Family: Dennstaedtiaceae
  Genus: Pteridium
    Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A.Heller*+
        bracken, bracken fern, eastern bracken fern
             Pteridium latiusculum (Desv.) Fr.
             Pteris latiuscula Desv.
Family: Dipsacaceae
  Genus: Dipsacus
    Dipsacus fullonum L. subsp. sylvestris*+
        common teasel, wild teasel
             Dipsacus sylvestris Huds.
  Genus: Knautia
    Knautia arvensis (L.) Coult.*+
        blue-buttons, field scabiosa
             Scabiosa arvensis L.
Family: Droseraceae
  Genus: Drosera
    Drosera anglica Huds.*+
        English sundew
             Drosera linearis Goldie X D. rotundifolia L.
             Drosera longifolia L.
             Drosera X anglica Huds. X
    Drosera intermedia Hayne*+
        narrow-leaved sundew, spoon-leaf sundew
             Drosera intermedia Hayne f. subcaulescens Melvill
    Drosera linearis Goldie*+
        linear-leaved sundew, slender-leaved sundew
    Drosera rotundifolia L.*+
        round-leaved sundew
Family: Dryopteridaceae
  Genus: Athyrium
    Athyrium filix-femina (L.) Roth ex Mert. var. angustum (Willd.) G.Lawson*+
        common lady fern, lady fern, northeastern lady fern, northern lady fern
             Aspidium angustum Willd.
             Asplenium elatius Link
             Athyrium angustum (Willd.) C.Presl
             Athyrium angustum (Willd.) C.Presl var. elatius (Link) Butters
             Athyrium angustum (Willd.) C.Presl var. rubellum (Gilbert) Butters
             Athyrium angustum (Willd.) C.Presl var. subtripinnatum Butters
             Athyrium filix-femina (L.) Roth ex Mert. subsp. angustum
             Athyrium filix-femina (L.) Roth ex Mert. var. michauxii (Spreng.) Farw.
             Athyrium filix-femina (L.) Roth ex Mert. f. elatius (Link) Clute var. michauxii (Spreng.) Farw.
             Athyrium filix-femina (L.) Roth ex Mert. f. rubellum (Gilbert) Farw. var. michauxii (Spreng.) Farw.
             Athyrium filix-femina (L.) Roth ex Mert. var. rubellum Gilbert
  Genus: Cystopteris
    Cystopteris bulbifera (L.) Bernh.*+
        bladder fern, bulblet bladder fern, bulblet fragile fern
             Filix bulbifera (L.) Underw.
             Polypodium bulbiferum L.
    Cystopteris fragilis (L.) Bernh.*+
        bladder fern, brittle bladder fern, northern fragile fern
             Cystopteris dickieana Sim
             Cystopteris fragilis (L.) Bernh. subsp. dickieana
             Cystopteris fragilis (L.) Bernh. var. angustata Lawson
             Cystopteris fragilis (L.) Bernh. var. fragilis
             Cystopteris fragilis (L.) Bernh. var. woodsioides H.Christ
             Filix fragilis (L.) Gilib.
             Polypodium fragile L.
    Cystopteris laurentiana (Weath.) Blasdell*+
        Laurentian bladder fern, St. Lawrence bladder fern
             Cystopteris fragilis (L.) Bernh. var. huteri (Hausm.) Luerss.
             Cystopteris fragilis (L.) Bernh. var. laurentiana Weath.
             Cystopteris X laurentiana (Weath.) Blasdell X
    Cystopteris tenuis (Michx.) Desv.*+
        MacKay's brittle fern, upland brittle bladder fern
             Nephrodium tenue Michx.
             Cystopteris fragilis (L.) Bernh. var. mackayi G.Lawson
  Genus: Deparia
    Deparia acrostichoides (Sw.) M.Kato*+
        silver false spleenwort, silvery glade fern, silvery spleenwort
             Asplenium acrostichoides Sw.
             Athyrium acrostichoides (Sw.) Diels
             Athyrium thelypterioides (Michx.) Desv.
             Athyrium thelypterioides (Michx.) Desv. f. acrostichoides (Sw.) Gilbert
             Diplazium acrostichoides (Sw.) Butters
  Genus: Dryopteris
    Dryopteris carthusiana (Vill.) H.P.Fuchs*+
        spinulose wood fern, toothed wood fern
             Aspidium spinulosum (O.F.Müll.) Sw.
             Dryopteris austriaca (Jacq.) Woyn. var. spinulosa (O.F.Müll) Fiori
             Dryopteris spinulosa (O.F.Müll.) Watt
             Polypodium carthusianum Vill.
             Polypodium spinulosum O.F.Müll.
             Thelypteris spinulosa (O.F.Müll.) Nieuwl.
    Dryopteris cristata (L.) A.Gray*+
        crested shield fern, crested wood fern
             Aspidium cristatum (L.) Sw.
             Polypodium cristatum L.
             Thelypteris cristata (L.) Nieuwl.
    Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy*+
        northern wood fern, spreading wood fern
             Nephrodium expansum C.Presl
             Aspidium spinulosum (O.F.Müll.) Sw. var. americanum Fisch. ex Kunze
             Dryopteris assimilis S.Walker
             Dryopteris dilatata auct. non (Hoffm.) A.Gray
             Dryopteris dilatata (Hoffm.) A.Gray subsp. americana
             Dryopteris spinulosa (O.F.Müll.) Watt var. americana (Fisch. ex Kunze) Fernald
             Dryopteris spinulosa (O.F.Müll.) Watt var. dilatata auct. non (Hoffm.) Underw.
             Thelypteris spinulosa (O.F.Müll.) Nieuwl. var. americana (Fisch. ex Kunze) Weath.
    Dryopteris filix-mas (L.) Schott*+
        male fern
             Polypodium filix-mas L.
    Dryopteris fragrans (L.) Schott*+
        fragrant fern, fragrant wood fern
             Dryopteris fragrans (L.) Schott var. remotiuscula Kom.
             Thelypteris fragrans (L.) Nieuwl.
             Thelypteris fragrans (L.) Nieuwl. var. hookeriana Fernald
             Polypodium fragrans L.
    Dryopteris goldiana (Hook. ex Goldie) A.Gray*+
        giant wood fern, Goldie's fern, Goldie's wood fern
             Aspidium goldianum Hook. ex Goldie
             Thelypteris goldiana (Hook. ex Goldie) Nieuwl.
    Dryopteris intermedia (Muhl. ex Willd.) A.Gray*+
        fancy wood fern, glandular wood fern, intermediate wood fern
             Aspidium intermedium Muhl. ex Willd.
             Aspidium spinulosum (O.F.Müll.) Sw. var. intermedium (Muhl. ex Willd.) D.C.Eaton
             Dryopteris austriaca (Jacq.) Woyn. var. intermedia (Muhl. ex Willd.) C.V.Morton
             Dryopteris spinulosa (O.F.Müll.) Watt var. intermedia (Muhl. ex Willd.) Underw.
             Thelypteris spinulosa (O.F.Müll.) Nieuwl. var. intermedia (Muhl. ex Willd.) Nieuwl.
    Dryopteris X boottii (Tuck.) Underw. (pro sp.) X *+
        Boott's wood fern
             Aspidium boottii Tuck.
             Thelypteris boottii (Tuck.) Nieuwl.
    Dryopteris X triploidea Wherry X +
        triploid wood fern
             Dryopteris austriaca (Jacq.) Woyn. var. fructuosa (Gilbert) C.V.Morton
             Dryopteris intermedia (Muhl. ex Willd.) A.Gray var. fructuosa (Gilbert) Wherry
             Dryopteris spinulosa (O.F.Müll.) Watt var. fructuosa (Gilbert) Trudell
             Thelypteris spinulosa (O.F.Müll.) Nieuwl. var. fructuosa (Gilbert) Fernald
    Dryopteris X uliginosa (A.Braun ex Dowell) Druce X +
        spinulose crested wood fern
             Dryopteris cristata (L.) A.Gray X D. spinulosa (O.F.Müll.) Watt
  Genus: Gymnocarpium
    Gymnocarpium dryopteris (L.) Newman*+
        common oak fern, western oak fern
             Dryopteris disjuncta (Rupr.) C.V.Morton
             Dryopteris dryopteris (L.) Britton
             Dryopteris linnaeana C.Chr.
             Lastrea dryopteris (L.) Bory
             Polypodium dryopteris L.
             Phegopteris dryopteris (L.) Fée
             Thelypteris dryopteris (L.) Sloss.
  Genus: Matteuccia
    Matteuccia struthiopteris (L.) Todaro var. pensylvanica (Willd.) C.V.Morton*+
        American ostrich fern, ostrich fern
             Matteuccia pensylvanica (Willd.) Raymond
             Matteuccia struthiopteris (L.) Todaro var. pubescens (Terry) Clute
             Onoclea struthiopteris (L.) Hoffm. var. pensylvanica (Willd.) B.Boivin
             Pteretis nodulosa (Michx.) Nieuwl.
             Pteretis nodulosa (Michx.) Nieuwl. f. pubescens (Terry) Fernald
             Pteretis pensylvanica (Willd.) Fernald
             Pteretis pensylvanica (Willd.) Fernald f. pubescens (Terry) Fernald
             Pteretis struthiopteris (L.) Nieuwl.
             Struthiopteris pensylvanica Willd.
  Genus: Onoclea
    Onoclea sensibilis L.*+
        sensitive fern
             Onoclea sensibilis L. f. obtusilobata (Schkuhr) Gilbert
             Onoclea sensibilis L. var. obtusilobata (Schkuhr) Torr.
  Genus: Polystichum
    Polystichum braunii (Spenn.) Fée*+
        Braun's holly fern
             Aspidium braunii Spenn.
             Polystichum braunii (Spenn.) Fée subsp. purshii
             Polystichum braunii (Spenn.) Fée var. purshii Fernald
    Polystichum lonchitis (L.) Roth*
        northern holly fern
             Polypodium lonchitis L.
  Genus: Woodsia
    Woodsia ilvensis (L.) R.Br.*+
        rusty cliff fern, rusty woodsia
             Acrostichum ilvense L.
Family: Elaeagnaceae
  Genus: Shepherdia
    Shepherdia canadensis (L.) Nutt.*+
        rabbit-berry, russet buffalo-berry
             Elaeagnus canadensis (L.) A.Nelson
             Hippophae canadensis L.
             Lepargyrea canadensis (L.) Greene
Family: Equisetaceae
  Genus: Equisetum
    Equisetum arvense L.*+
        common horsetail, field horsetail
             Equisetum arvense L. f. alpestre (Wahlenb.) Luerss.
             Equisetum arvense L. f. boreale (Bong.) Klinge
             Equisetum arvense L. f. decumbens (G.Mey.) W.D.J.Koch
             Equisetum arvense L. f. ramulosum (Rupr.) Klinge
             Equisetum arvense L. f. varium (Milde) Klinge
             Equisetum arvense L. var. alpestre Wahlenb.
             Equisetum arvense L. var. boreale (Bong.) Rupr.
             Equisetum arvense L. f. pseudo-varium Vict. var. boreale (Bong.) Rupr.
             Equisetum arvense L. f. pseudo-alpestre Vict. var. boreale (Bong.) Rupr.
             Equisetum arvense L. var. campestre Wahlenb.
             Equisetum arvense L. var. riparium Farw.
             Equisetum calderi B.Boivin
    Equisetum fluviatile L.*+
        pipes, river horsetail, water horsetail
             Equisetum fluviatile L. f. linnaeanum (Döll) M.Broun
             Equisetum fluviatile L. f. minus (R.Br.) M.Broun
             Equisetum fluviatile L. f. natans (Vict.) M.Broun
             Equisetum fluviatile L. var. limosum (L.) Gilbert
             Equisetum limosum L.
    Equisetum hyemale L. subsp. affine*+
        common scouring rush, pipes, scouring rush horsetail
             Equisetum affine Engelm.
             Equisetum hyemale L. var. affine (Engelm.) A.A.Eaton
             Equisetum hyemale L. var. californicum Milde
             Equisetum hyemale L. var. pseudohyemale (Farw.) C.V.Morton
             Equisetum hyemale L. var. robustum (A.Braun) A.A.Eaton
             Equisetum prealtum Raf.
             Equisetum robustum A.Braun
             Equisetum robustum A.Braun var. affine Engelm.
             Hippochaete hyemalis (L.) Bruhin subsp. affinis
    Equisetum laevigatum A.Braun*+
        smooth horsetail, smooth scouring rush
             Equisetum funstonii A.A.Eaton
             Equisetum kansanum J.H.Schaffn.
             Equisetum laevigatum A.Braun subsp. funstonii
             Hippochaete laevigata (A.Braun) Farw.
    Equisetum palustre L.*+
        marsh horsetail
             Equisetum palustre L. f. verticillatum Milde
             Equisetum palustre L. var. americanum Vict.
             Equisetum palustre L. f. luxurians Vict. var. americanum Vict.
             Equisetum palustre L. var. palustre
             Equisetum palustre L. var. simplicissimum A.Braun
    Equisetum pratense Ehrh.*+
        meadow horsetail
             Equisetum pratense Ehrh. f. nanum (Milde) Klinge
    Equisetum scirpoides Michx.*+
        dwarf scouring rush, sedge horsetail
    Equisetum sylvaticum L.*+
        wood horsetail, woodland horsetail
             Equisetum sylvaticum L. var. multiramosum (Fernald) Wherry
             Equisetum sylvaticum L. var. pauciramosum Milde
             Equisetum sylvaticum L. f. multiramosum Fernald var. pauciramosum Milde
    Equisetum variegatum Schleich. ex F.Weber & D.Mohr subsp. variegatum*+
        variegated horsetail, variegated scouring rush
             Equisetum variegatum Schleich. ex F.Weber & D.Mohr var. anceps Milde
             Equisetum variegatum Schleich. ex F.Weber & D.Mohr var. variegatum
             Hippochaete variegata (Schleich. ex F.Weber & D.Mohr) Bruhin
    Equisetum X ferrissii Clute (pro sp.) X *+
        Ferriss' horsetail
             Equisetum hyemale L. var. elatum (Engelm.) C.V.Morton
             Equisetum hyemale L. var. intermedium A.A.Eaton
             Equisetum intermedium (A.A.Eaton) Rydb.
    Equisetum X litorale Kühlew. ex Rupr. (pro sp.) X *+
        littoral horsetail, shore horsetail
Family: Ericaceae
  Genus: Andromeda
    Andromeda glaucophylla Link*+
        bog-rosemary
             Andromeda glaucophylla Link var. iodandra Fernald
             Andromeda polifolia L. subsp. glaucophylla
             Andromeda polifolia L. var. glaucophylla (Link) DC.
  Genus: Arctostaphylos
    Arctostaphylos uva-ursi (L.) Spreng.*+
        bearberry, kinnickinnick
             Arctostaphylos adenotricha (Fernald & J.F.Macbr.) A.Löve, D.Löve
             Arctostaphylos uva-ursi (L.) Spreng. subsp. adenotricha
             Arctostaphylos uva-ursi (L.) Spreng. subsp. coactilis
             Arctostaphylos uva-ursi (L.) Spreng. subsp. longipilosa
             Arctostaphylos uva-ursi (L.) Spreng. subsp. monoensis
             Arctostaphylos uva-ursi (L.) Spreng. subsp. stipitata
             Arctostaphylos uva-ursi (L.) Spreng. subsp. uva-ursi
             Arctostaphylos uva-ursi (L.) Spreng. var. coactilis Fernald & J.F.Macbr. subsp. uva-ursi
             Arctostaphylos uva-ursi (L.) Spreng. var. adenotricha Fernald & J.F.Macbr.
             Arctostaphylos uva-ursi (L.) Spreng. var. coactilis Fernald & J.F.Macbr.
             Arctostaphylos uva-ursi (L.) Spreng. var. leobreweri Roof
             Arctostaphylos uva-ursi (L.) Spreng. var. marinensis Roof
             Arctostaphylos uva-ursi (L.) Spreng. var. pacifica Hultén
             Arctostaphylos uva-ursi (L.) Spreng. var. stipitata (Packer & Denford) Dorn
             Arctostaphylos uva-ursi (L.) Spreng. var. suborbiculata W.Knight
             Arctostaphylos uva-ursi (L.) Spreng. var. uva-ursi
             Uva-Ursi uva-ursi (L.) Britton
  Genus: Chamaedaphne
    Chamaedaphne calyculata (L.) Moench var. angustifolia (Aiton) Rehder*+
        leather-leaf
             Andromeda calyculata L. var. angustifolia Aiton
             Cassandra calyculata (L.) D.Don var. angustifolia (Aiton) Seym.
  Genus: Epigaea
    Epigaea repens L.*+
        trailing-arbutus
             Epigaea repens L. var. glabrifolia Fernald
  Genus: Gaultheria
    Gaultheria hispidula (L.) Muhl. ex Bigelow*+
        creeping-snowberry, moxie
             Chiogenes hispidula (L.) Torr. & A.Gray
    Gaultheria procumbens L.+
        checkerberry, eastern teaberry, wintergreen
  Genus: Gaylussacia
    Gaylussacia baccata (Wangenh.) K.Koch*+
        black huckleberry, huckleberry
             Andromeda baccata Wangenh.
             Decachaena baccata (Wangenh.) Small
  Genus: Kalmia
    Kalmia polifolia Wangenh.*+
        bog-laurel, pale-laurel, swamp-laurel
             Chamaedaphne glauca (Aiton) Kuntze
             Kalmia polifolia Wangenh. var. rosmarinifolia (Pursh) Rehder
  Genus: Ledum
    Ledum groenlandicum Oeder*+
        Labrador-tea
             Ledum latifolium Jacq.
             Ledum palustre L. subsp. groenlandicum
             Ledum palustre L. var. latifolium (Jacq.) Michx.
             Rhododendron groenlandicum (Oeder) Kron & Judd
  Genus: Vaccinium
    Vaccinium angustifolium Aiton*+
        early low blueberry, low-bush blueberry, low sweet blueberry
             Vaccinium angustifolium Aiton var. hypolasium Fernald
             Vaccinium angustifolium Aiton var. laevifolium House
             Vaccinium angustifolium Aiton var. nigrum (A.W.Wood) Dole
             Vaccinium brittonii Porter ex E.P.Bicknell
             Vaccinium lamarckii Camp
             Vaccinium nigrum (A.W.Wood) Britton
             Vaccinium pensilvanicum Lam.
             Vaccinium pensilvanicum Lam. var. angustifolium (Aiton) A.Gray
             Vaccinium pensilvanicum Lam. var. nigrum A.W.Wood
    Vaccinium macrocarpon Aiton*+
        cranberry, large cranberry
             Oxycoccus macrocarpus (Aiton) Pers.
    Vaccinium myrtilloides Michx.*+
        Canada blueberry, velvet-leaf blueberry, velvet-leaf huckleberry
             Cyanococcus canadensis (Kalm ex A.Rich.) Rydb.
             Vaccinium angustifolium Aiton var. myrtilloides (Michx.) House
             Vaccinium canadense Kalm ex A.Rich.
             Vaccinium pensilvanicum Lam. var. myrtilloides (Michx.) Fernald
    Vaccinium oxycoccos L.*+
        small cranberry
             Oxycoccus hagerupii A.Löve & D.Löve
             Oxycoccus intermedius (A.Gray) Rydb.
             Oxycoccus microcarpus Turcz. ex Rupr.
             Oxycoccus ovalifolius (Michx.) Porsild
             Oxycoccus oxycoccos (L.) MacMill.
             Oxycoccus oxycoccos (L.) Adolphi
             Oxycoccus palustris Pers.
             Oxycoccus palustris Pers. subsp. microphyllus
             Oxycoccus palustris Pers. var. intermedius (A.Gray) T.J.Howell
             Oxycoccus palustris Pers. var. ovalifolius (Michx.) Seym.
             Oxycoccus quadripetalus Gilib.
             Oxycoccus quadripetalus Gilib. var. microphyllus (Lange) Porsild
             Vaccinium microcarpos (Turcz. ex Rupr.) Schmalh.
             Vaccinium microphyllum (Lange) Hagerup ex A.Löve
             Vaccinium oxycoccos L. var. intermedium A.Gray
             Vaccinium oxycoccos L. var. microphyllum (Lange) J.Rousseau & Raymond
             Vaccinium oxycoccos L. var. ovalifolium Michx.
             Vaccinium uliginosum L. var. microphyllum Lange
    Vaccinium vitis-idaea L. subsp. minus*+
        lingonberry, mountain cranberry, partridgeberry
             Vaccinium vitis-idaea L. var. minus Lodd.
             Vaccinium vitis-idaea L. var. punctatum Moench
Family: Eriocaulaceae
  Genus: Eriocaulon
    Eriocaulon aquaticum (Hill) Druce*+
        seven-angle pipewort, white buttons
             Cespa aquatica Hill
             Eriocaulon articulatum (Huds.) Morong
             Eriocaulon pellucidum Michx.
             Eriocaulon pumilum Raf.
             Eriocaulon septangulare With.
             Nasmythia articulata Huds.
             Nasmythia septangularis (With.) Mart.
Family: Euphorbiaceae
  Genus: Chamaesyce
    Chamaesyce glyptosperma (Engelm.) Small*+
        rib-seed sand-mat, ridge-seeded spurge
             Euphorbia glyptosperma Engelm.
    Chamaesyce maculata (L.) Small*+
        milk-purslane, spotted sand-mat, wart-weed
             Chamaesyce mathewsii Small
             Chamaesyce supina (Raf.) Moldenke
             Chamaesyce tracyi Small
             Euphorbia maculata L.
             Euphorbia supina Raf.
  Genus: Euphorbia
    Euphorbia corollata L.*+
        flowering spurge
             Euphorbia corollata L. var. angustifolia Elliott
             Euphorbia corollata L. var. corollata
             Euphorbia corollata L. var. mollis Millsp.
             Euphorbia corollata L. var. paniculata (Elliott) Boiss.
             Euphorbia marilandica Greene
             Euphorbia pubentissima Michx.
             Tithymalopsis corollata (L.) Klotzsch & Garcke
             Tithymalopsis marilandica (Greene) Small
             Tithymalopsis olivacea Small
    Euphorbia cyparissias L.*+
        cypress spurge, graveyard spurge
             Galarhoeus cyparissias (L.) Small ex Rydb.
             Tithymalus cyparissias (L.) Hill
    Euphorbia esula L. var. esula *+
        leafy spurge, wolf's-milk
             Euphorbia intercedens Podp. ex Harrington
             Euphorbia poderae Croizat
             Galarhoeus esula (L.) Rydb.
             Tithymalus esula (L.) Hill
Family: Fabaceae
  Genus: Amphicarpaea
    Amphicarpaea bracteata (L.) Fernald*+
        American hog-peanut, hog-peanut
             Amphicarpaea bracteata (L.) Fernald var. bracteata
             Amphicarpaea bracteata (L.) Fernald var. comosa (L.) Fernald
             Amphicarpaea bracteata (L.) Fernald var. pitcheri (Torr. & A.Gray) Fassett
             Amphicarpaea comosa (L.) G.Don
             Amphicarpaea monoica (L.) Elliott
             Amphicarpaea pitcheri Torr. & A.Gray
             Falcata comosa (L.) Kuntze
             Falcata pitcheri (Torr. & A.Gray) Kuntze
             Glycine bracteata L.
             Glycine comosa L.
             Glycine monoica L.
  Genus: Apios
    Apios americana Medik.*+
        common groundnut, Indian-potato, potato-bean
             Apios americana Medik. f. pilosa Steyerm.
             Apios americana Medik. var. turrigera Fernald
             Apios tuberosa Moench
             Glycine apios L.
  Genus: Astragalus
    Astragalus canadensis L. var. canadensis *+
        Canadian milk-vetch
             Astragalus canadensis L. var. carolinianus (L.) M.E.Jones
             Astragalus canadensis L. var. longilobus Fassett
             Astragalus carolinianus L.
             Astragalus halei Rydb.
  Genus: Coronilla
    Coronilla varia L.*+
        crown-vetch, purple crown-vetch
             Securigera varia (L.) Lassen
  Genus: Desmodium
    Desmodium glutinosum (Muhl. ex Willd.) A.W.Wood*+
        cluster-leaf tick-trefoil, pointed tick-trefoil
             Desmodium acuminatum (Michx.) DC.
             Desmodium acuminatum (Michx.) DC. f. chandonnetii (Lunell) Fassett
             Desmodium glutinosum (Muhl. ex Willd.) A.W.Wood f. chandonnetii (Lunell) B.G.Schub.
             Hedysarum acuminatum Michx.
             Hedysarum glutinosum Muhl. ex Willd.
             Meibomia acuminata (Michx.) S.F.Blake
             Meibomia grandiflora auct. non (Walter) Kuntze
             Meibomia grandiflora (Walter) Kuntze var. chandonnetii Lunell
  Genus: Lathyrus
    Lathyrus japonicus Willd.*+
        beach pea
    Lathyrus japonicus Willd. var. maritimus (L.) Kartesz & Gandhi*+
        beach pea
             Lathyrus japonicus Willd. subsp. maritimus
             Lathyrus japonicus Willd. var. glaber (Ser.) Fernald
             Lathyrus japonicus Willd. f. spectabilis Fassett var. glaber (Ser.) Fernald
             Lathyrus maritimus (L.) Bigelow
             Lathyrus maritimus (L.) Bigelow var. glaber (Ser.) Eames
             Pisum maritimum L.
             Pisum maritimum L. var. glabrum Ser.
    Lathyrus latifolius L.*+
        everlasting pea, perennial pea-vine
    Lathyrus ochroleucus Hook.*+
        cream pea-vine, pale vetchling, white pea
    Lathyrus palustris L.*+
        marsh pea, marsh vetchling, slender-stem pea-vine
             Lathyrus myrtifolius Muhl. ex Willd.
             Lathyrus myrtifolius Muhl. ex Willd. var. macranthus T.G.White
             Lathyrus palustris L. subsp. pilosus
             Lathyrus palustris L. var. genuinus Gren. & Godr.
             Lathyrus palustris L. var. linearifolius Ser.
             Lathyrus palustris L. var. macranthus (T.G.White) Fernald
             Lathyrus palustris L. var. meridionalis Butters & H.St.John
             Lathyrus palustris L. var. myrtifolius (Muhl. ex Willd.) A.Gray
             Lathyrus palustris L. var. palustris
             Lathyrus palustris L. var. pilosus (Cham.) Ledeb.
             Lathyrus palustris L. var. retusus Fernald & H.St.John
             Lathyrus pilosus Cham.
             Orobus myrtifolius (Muhl. ex Willd.) A.Hall
    Lathyrus sylvestris L.*+
        everlasting pea, flat pea-vine, perennial pea
    Lathyrus venosus Muhl. ex Willd.*+
        forest pea, veiny pea, veiny pea-vine
             Lathyrus oreophilus Wooton & Standl.
             Lathyrus venosus Muhl. ex Willd. subsp. arkansanus
             Lathyrus venosus Muhl. ex Willd. var. arkansanus Fassett
             Lathyrus venosus Muhl. ex Willd. var. intonsus Butters & H.St.John
             Lathyrus venosus Muhl. ex Willd. var. meridionalis Butters & H.St.John
  Genus: Lotus
    Lotus corniculatus L.*+
        bird's-foot deer-vetch, bird's-foot trefoil
             Lotus corniculatus L. var. arvensis (Schkuhr) Ser. ex DC.
  Genus: Lupinus
    Lupinus polyphyllus Lindl.*+
        big-leaf lupine
  Genus: Medicago
    Medicago lupulina L.*+
        black medick
             Medicago cupianiana Guss.
             Medicago lupulina L. var. cupianiana (Guss.) Boiss.
             Medicago lupulina L. var. glandulosa Neilr.
    Medicago sativa L. subsp. sativa+
        alfalfa, blue alfalfa
  Genus: Melilotus
    Melilotus albus Medik.*+
        white sweet-clover
             Melilotus albus Medik. var. annuus Coe
    Melilotus officinalis (L.) Lam.*+
        yellow sweet-clover
             Trifolium melilotus-officinalis L.
  Genus: Trifolium
    Trifolium aureum Pollich*+
        golden clover, palmate hop clover, yellow hop clover
             Trifolium agrarium L.
    Trifolium campestre Schreb.*+
        field clover, low hop clover, pinnate hop clover
             Trifolium procumbens L.
    Trifolium hybridum L.*+
        alsike clover
             Trifolium elegans Savi
             Trifolium hybridum L. subsp. elegans
             Trifolium hybridum L. var. elegans (Savi) Boiss.
             Trifolium hybridum L. var. pratense Rabenh.
    Trifolium pratense L.*+
        red clover
             Trifolium pratense L. f. albiflorum Puskal
             Trifolium pratense L. f. leucochraceum Asch. & Prantl
             Trifolium pratense L. f. semipurpureum (Strobl) Asch. & Graebn.
             Trifolium pratense L. var. frigidum auct. non Gaudin
             Trifolium pratense L. var. sativum (Mill.) Schreb.
             Trifolium pratense L. f. flavicans (Vis.) Hayek var. sativum (Mill.) Schreb.
    Trifolium repens L.*+
        white clover
  Genus: Vicia
    Vicia americana Muhl. ex Willd. subsp. americana*+
        American vetch
             Vicia americana Muhl. ex Willd. subsp. oregana
             Vicia americana Muhl. ex Willd. subsp. truncata
             Vicia americana Muhl. ex Willd. var. americana
             Vicia americana Muhl. ex Willd. var. oregana (Nutt.) A.Nelson
             Vicia americana Muhl. ex Willd. var. truncata (Nutt.) Brewer
             Vicia americana Muhl. ex Willd. var. villosa (Kellogg) F.J.Herm.
             Vicia californica Greene
             Vicia californica Greene var. madrensis Jeps.
             Vicia oregana Nutt.
             Vicia sparsifolia Nutt. ex Torr. & A.Gray var. truncata (Nutt.) S.Watson
             Vicia truncata Nutt.
    Vicia cracca L. subsp. cracca+
        bird vetch, cow vetch
             Vicia cracca L. var. cracca
    Vicia sativa L. subsp. nigra*+
        common vetch, narrow-leaved vetch, spring vetch
             Vicia angustifolia L.
             Vicia angustifolia L. var. segetalis (Thuill.) W.D.J.Koch
             Vicia angustifolia L. var. uncinata (Desf. ex Nyman) Rouy
             Vicia sativa L. var. angustifolia (L.) Ser.
             Vicia sativa L. var. nigra L.
             Vicia sativa L. var. segetalis (Thuill.) Ser.
             Vicia segetalis Thuill.
             Vicia uncinata Desf. ex Nyman
    Vicia villosa Roth*+
        hairy vetch, winter vetch
             Vicia villosa Roth subsp. villosa
Family: Fagaceae
  Genus: Quercus
    Quercus ellipsoidalis E.J.Hill*+
        Hill's oak, northern pin oak
             Quercus ellipsoidalis E.J.Hill var. kaposianensis J.W.Moore
    Quercus rubra L.*+
        northern red oak
             Quercus ambigua F.Michx.
             Quercus borealis F.Michx.
             Quercus borealis F.Michx. var. borealis
             Quercus borealis F.Michx. var. maxima (Marshall) Ashe
             Quercus coccinea Münchh. var. ambigua (F.Michx.) A.Gray
             Quercus maxima (Marshall) Ashe
             Quercus rubra L. var. ambigua (F.Michx.) Fernald
             Quercus rubra L. var. ambigua (F.Michx.) Houba
             Quercus rubra L. var. borealis (F.Michx.) Farw.
             Quercus rubra L. var. maxima Marshall
             Quercus rubra L. var. rubra
Family: Fumariaceae
  Genus: Corydalis
    Corydalis sempervirens (L.) Pers.*+
        pink and yellow corydalis, pale corydalis, rock harlequin
             Capnoides sempervirens (L.) Borkh.
             Fumaria sempervirens L.
  Genus: Dicentra
    Dicentra canadensis (Goldie) Walp.*+
        squirrel-corn
             Bicuculla canadensis (Goldie) Millsp.
             Corydalis canadensis Goldie
    Dicentra cucullaria (L.) Bernh.*+
        Dutchman's-breeches
             Bicuculla cucullaria (L.) Millsp.
             Bicuculla occidentalis Rydb.
             Dicentra cucullaria (L.) Bernh. var. occidentalis (Rydb.) M.Peck
             Dicentra occidentalis (Rydb.) Fedde
             Fumaria cucullaria L.
Family: Gentianaceae
  Genus: Gentiana
    Gentiana andrewsii Griseb. var. andrewsii *+
        Andrews' gentian, bottle gentian, prairie closed gentian
             Dasystephana andrewsii (Griseb.) Small
             Gentiana andrewsii Griseb. f. albiflora Britton
             Pneumonanthe andrewsii (Griseb.) W.A.Weber
    Gentiana rubricaulis Schwein.*+
        closed gentian, Great Lakes gentian, red-stemmed gentian
             Dasystephana grayi (Kusn.) Britton
             Gentiana linearis Froel. subsp. rubricaulis
             Gentiana linearis Froel. var. lanceolata A.Gray
             Gentiana linearis Froel. var. latifolia A.Gray
             Gentiana linearis Froel. var. rubricaulis (Schwein.) MacMill.
  Genus: Halenia
    Halenia deflexa (Sm.) Griseb. subsp. deflexa*+
        American spurred-gentian, spurred-gentian
             Halenia deflexa (Sm.) Griseb. var. deflexa
             Swertia deflexa Sm.
Family: Geraniaceae
  Genus: Geranium
    Geranium bicknellii Britton var. bicknellii *+
        Bicknell's crane's-bill, northern crane's-bill
             Geranium nemorale Suksd. var. bicknellii (Britton) Fernald
Family: Grossulariaceae
  Genus: Ribes
    Ribes americanum Mill.*+
        American black currant, eastern black currant, wild black currant
             Ribes americanum Mill. f. pauciglandulosum Fassett
             Ribes floridum L'Hér.
    Ribes cynosbati L.*+
        dogberry, eastern prickly gooseberry, prickly wild gooseberry
             Grossularia cynosbati (L.) Mill.
             Ribes cynosbati L. f. inerme Rehder
             Ribes cynosbati L. var. atrox Fernald
             Ribes cynosbati L. var. glabratum Fernald
             Ribes cynosbati L. var. inerme (Rehder) L.H.Bailey
             Ribes huronense Rydb.
    Ribes glandulosum Grauer*+
        skunk currant
             Ribes prostratum L'Hér.
             Ribes prostratum L'Hér. var. wisconsinum Fassett
             Ribes resinosum Pursh
    Ribes hirtellum Michx.*+
        hairy-stem gooseberry, northern gooseberry, swamp gooseberry
             Grossularia hirtella (Michx.) Spach
             Ribes hirtellum Michx. var. calcicola (Fernald) Fernald
             Ribes hirtellum Michx. var. saxosum (Hook.) Fernald
             Ribes oxyacanthoides L. var. calcicola Fernald
             Ribes oxyacanthoides L. var. hirtellum (Michx.) Scoggan
             Ribes oxyacanthoides L. var. saxosum (Hook.) Coville
             Ribes saxosum Hook.
    Ribes hudsonianum Richardson*+
        Canadian black currant, northern black currant
    Ribes oxyacanthoides L. subsp. oxyacanthoides*+
        Canadian gooseberry, northern gooseberry
             Ribes oxyacanthoides L. var. oxyacanthoides
    Ribes rubrum L.*+
        cherry-currant, cultivated currant, garden red currant
             Ribes sativum Syme
             Ribes sylvestre (Lam.) Mert. & W.D.J.Koch
             Ribes vulgare Lam.
    Ribes triste Pall.*+
        swamp red currant
             Ribes albinervium Michx.
             Ribes propinquum Turcz.
             Ribes rubrum L. var. alaskanum (Berger) B.Boivin
             Ribes rubrum L. var. propinquum (Turcz.) Trautv. & C.A.Mey.
             Ribes triste Pall. var. alaskanum Berger
             Ribes triste Pall. var. albinervium (Michx.) Fernald
Family: Haloragaceae
  Genus: Myriophyllum
    Myriophyllum alterniflorum DC.+
        alternate-flowered water-milfoil
             Myriophyllum alterniflorum DC. var. americanum Pugsley
    Myriophyllum farwellii Morong*+
        Farwell's milfoil, Farwell's water-milfoil
    Myriophyllum heterophyllum Michx.+
        two-leaf water-milfoil, various-leaved water-milfoil
    Myriophyllum sibiricum Kom.*+
        common water-milfoil, short-spike water-milfoil
             Myriophyllum exalbescens Fernald
             Myriophyllum exalbescens Fernald var. magdalenense (Fernald) A.Löve
             Myriophyllum magdalenense Fernald
             Myriophyllum spicatum L. subsp. exalbescens
             Myriophyllum spicatum L. subsp. squamosum
             Myriophyllum spicatum L. var. capillaceum Lange
             Myriophyllum spicatum L. var. exalbescens (Fernald) Jeps.
             Myriophyllum spicatum L. var. squamosum (Laest. ex Hartman) Hartman
    Myriophyllum verticillatum L.*+
        whorled water-milfoil
             Myriophyllum verticillatum L. var. cheneyi Fassett
             Myriophyllum verticillatum L. var. intermedium W.D.J.Koch
             Myriophyllum verticillatum L. var. pectinatum Wallr.
             Myriophyllum verticillatum L. var. pinnatifidum Wallr.
Family: Hamamelidaceae
  Genus: Hamamelis
    Hamamelis virginiana L.*+
        American witch-hazel
             Hamamelis androgyna Walter
             Hamamelis corylifolia Moench
             Hamamelis dioica Walter
             Hamamelis macrophylla Pursh
             Hamamelis virginiana L. var. angustifolia Nieuwl.
             Hamamelis virginiana L. var. henryi Jenne
             Hamamelis virginiana L. var. macrophylla (Pursh) Nutt.
             Hamamelis virginiana L. var. orbiculata Nieuwl.
             Hamamelis virginiana L. var. parvifolia Nutt.
             Trilopus dentata Raf.
             Trilopus estivalis Raf.
             Trilopus nigra Raf.
             Trilopus nigra Raf. var. catesbiana Raf.
             Trilopus parvifolia (Nutt.) Raf.
             Trilopus rotundifolia Raf.
             Trilopus virginica (L.) Raf.
Family: Hippocastanaceae
  Genus: Aesculus
    Aesculus glabra Willd. var. glabra *+
        Ohio buckeye
             Aesculus glabra Willd. f. pallida (Willd.) Fernald
             Aesculus glabra Willd. var. leucodermis Sarg.
             Aesculus glabra Willd. var. micrantha Sarg.
             Aesculus glabra Willd. var. monticola Sarg.
             Aesculus glabra Willd. var. pallida (Willd.) Kirchn.
             Aesculus glabra Willd. var. sargentii Rehder
             Aesculus pallida Willd.
Family: Hydrocharitaceae
  Genus: Elodea
    Elodea canadensis Michx.*+
        Canadian waterweed, common waterweed
             Anacharis canadensis (Michx.) Planch.
             Anacharis canadensis (Michx.) Planch. var. planchonii (Casp.) Vict.
             Elodea brandegeae H.St.John
             Elodea ioensis Wylie
             Elodea linearis (Rydb.) H.St.John
             Elodea planchonii Casp.
             Philotria canadensis (Michx.) Britton
             Philotria linearis Rydb.
    Elodea nuttallii (Planch.) H.St.John+
        free-flowered waterweed, slender waterweed
             Anacharis nuttallii Planch.
             Anacharis occidentalis (Pursh) Vict.
             Elodea columbiana H.St.John
             Elodea minor (Engelm. ex Casp.) Farw.
             Elodea occidentalis (Pursh) H.St.John
             Philotria angustifolia (Muhl.) Britton ex Rydb.
             Philotria minor (Engelm. ex Casp.) Small
             Philotria nuttallii (Planch.) Rydb.
             Philotria occidentalis (Pursh) House
             Udora verticillata (L.f.) Spreng. var. minor Engelm. ex Casp.
  Genus: Vallisneria
    Vallisneria americana Michx.*+
        American eelgrass, water-celery
             Vallisneria americana Michx. var. americana
             Vallisneria asiatica Michx.
             Vallisneria neotropicalis Vict.
             Vallisneria spiralis auct. non L.
             Vallisneria spiralis L. var. asiatica (Michx.) Torr.
Family: Hypericaceae
  Genus: Hypericum
    Hypericum boreale (Britton) E.P.Bicknell*+
        northern St. John's-wort
             Hypericum boreale (Britton) E.P.Bicknell f. callitrichoides Fassett
             Hypericum mutilum L. subsp. boreale
    Hypericum ellipticum Hook.+
        creeping St. John's-wort, pale St. John's-wort
             Hypericum ellipticum Hook. f. foliosum Vict.
             Hypericum ellipticum Hook. f. submersum Fassett
    Hypericum majus (A.Gray) Britton*+
        larger Canadian St. John's-wort
             Hypericum canadense L. var. majus A.Gray
    Hypericum perforatum L.*+
        common St. John's-wort, Klamath-weed, St. John's-wort
    Hypericum punctatum Lam.*+
        spotted St. John's-wort
             Hypericum punctatum Lam. f. subpetiolatum (E.P. Bicknell ex Small) Fernald
             Hypericum subpetiolatum E.P.Bicknell ex Small
  Genus: Triadenum
    Triadenum fraseri (Spach) Gleason*+
        bog St. John's-wort, Fraser's marsh St. John's-wort
             Elodea fraseri Spach
             Hypericum virginicum L. var. fraseri (Spach) Fernald
             Triadenum virginicum (L.) Raf. subsp. fraseri
             Triadenum virginicum (L.) Raf. var. fraseri (Spach) Cooperr.
Family: Iridaceae
  Genus: Iris
    Iris versicolor L.*+
        blue flag, harlequin blue flag, northern blue flag
  Genus: Sisyrinchium
    Sisyrinchium montanum Greene var. crebrum Fernald+
        mountain blue-eyed grass, strict blue-eyed grass
             Sisyrinchium bermudiana L. var. crebrum (Fernald) B.Boivin
             Sisyrinchium montanum Greene subsp. crebrum
    Sisyrinchium strictum E.P.Bicknell+
        mountain blue-eyed-grass
Family: Isoetaceae
  Genus: Isoetes
    Isoetes echinospora Durieu*+
        spiny-spored quillwort, stiff quillwort
             Isoetes braunii Durieu
             Isoetes echinospora Durieu subsp. asiatica
             Isoetes echinospora Durieu subsp. muricata
             Isoetes echinospora Durieu var. asiatica Makino
             Isoetes echinospora Durieu var. boottii Engelm.
             Isoetes echinospora Durieu var. braunii (Durieu) Engelm.
             Isoetes echinospora Durieu var. hesperia (C.F.Reed) A.Löve
             Isoetes echinospora Durieu var. muricata (Durieu) Engelm.
             Isoetes echinospora Durieu var. robusta Engelm.
             Isoetes echinospora Durieu var. savilei B.Boivin
             Isoetes muricata Durieu
             Isoetes muricata Durieu var. braunii (Durieu) C.F.Reed
             Isoetes muricata Durieu var. hesperia C.F.Reed
             Isoetes setacea Lam., pro parte
             Isoetes setacea Lam. subsp. muricata
             Isoetes tenella auct. non L.
    Isoetes lacustris L.+
        deep-water quillwort, lake quillwort, large-spored quillwort
             Isoetes hieroglyphica A.A.Eaton
             Isoetes macrospora Durieu
Family: Juncaceae
  Genus: Juncus
    Juncus alpinoarticulatus Chaix*+
        northern green rush
             Juncus alpinus Vill.
             Juncus alpinoarticulatus Chaix subsp. americanus
             Juncus alpinoarticulatus Chaix subsp. fuscescens
             Juncus alpinoarticulatus Chaix subsp. nodulosus
             Juncus alpinus Vill. subsp. nodulosus
             Juncus alpinus Vill. var. americanus Farw.
             Juncus alpinus Vill. var. fuscescens Fernald
             Juncus alpinus Vill. var. insignis Fr. ex Buchenau
             Juncus alpinus Vill. var. rariflorus (Hartm.) Hartm.
             Juncus nodulosus Wahlenb.
             Juncus rariflorus Hartm.
             Juncus richardsonianus Schult.
    Juncus anthelatus (Wiegand) R.E.Brooks+
             Juncus macer S.F.Gray f. anthelatus (Wiegand) F.J.Herm.
             Juncus macer S.F.Gray f. discretiflorus F.J.Herm.
             Juncus macer S.F.Gray var. anthelatus (Wiegand) Fernald
             Juncus tenuis Willd. f. anthelatus (Wiegand) F.J.Herm.
             Juncus tenuis Willd. f. discretiflorus (F.J.Herm.) Fernald
             Juncus tenuis Willd. var. anthelatus Wiegand
    Juncus arcticus Willd. var. balticus (Willd.) Trautv.*+
        Arctic rush, Baltic rush, wire rush
             Juncus arcticus Willd. subsp. ater
             Juncus arcticus Willd. subsp. balticus
             Juncus arcticus Willd. subsp. littoralis
             Juncus arcticus Willd. var. gracilis Hook.
             Juncus arcticus Willd. var. littoralis (Engelm.) B.Boivin
             Juncus arcticus Willd. var. montanus (Engelm.) S.L.Welsh
             Juncus arcticus Willd. var. montanus (Engelm.) Balslev
             Juncus ater Rydb.
             Juncus balticus Willd.
             Juncus balticus Willd. subsp. vallicola
             Juncus balticus Willd. var. condensatus Suksd.
             Juncus balticus Willd. var. eremicus Jeps.
             Juncus balticus Willd. var. littoralis Engelm.
             Juncus balticus Willd. f. dissitiflorus Engelm. ex Fernald & Wiegand var. littoralis Engelm.
             Juncus balticus Willd. var. melanogenus Fernald & Wiegand
             Juncus balticus Willd. var. montanus Engelm.
             Juncus balticus Willd. var. vallicola Rydb.
             Juncus breweri Engelm.
             Juncus vallicola (Rydb.) Rydb.
    Juncus brevicaudatus (Engelm.) Fernald*+
        narrow-panicle rush
             Juncus canadensis J.Gay var. brevicaudatus Engelm.
             Juncus canadensis J.Gay var. coarctatus Engelm.
             Juncus canadensis J.Gay var. kuntzei Buchenau
             Juncus coarctatus (Engelm.) Buchenau
             Juncus kuntzei (Buchenau) Vierh.
             Juncus tweedyi Rydb.
    Juncus bufonius L.*+
        toad rush
             Juncus bufonius L. var. congestus (S.Watson) Fernald
             Juncus bufonius L. var. halophilus Buchenau & Fern.
             Juncus bufonius L. var. hybridus Farw.
             Juncus bufonius L. var. occidentalis F.J.Herm.
             Juncus bufonius L. var. ranarius (Songeon & E.P.Perrier) Farw.
             Juncus congestus S.Watson
             Juncus ranarius Songeon & E.P.Perrier
    Juncus canadensis J.Gay*+
        Canadian rush
             Juncus canadensis J.Gay f. apertus Fernald
             Juncus canadensis J.Gay f. canadensis
             Juncus canadensis J.Gay f. conglobatus Fernald
             Juncus canadensis J.Gay var. euroauster Fernald
             Juncus canadensis J.Gay var. longicaudatus Engl.
             Juncus canadensis J.Gay var. sparsiflorus Fernald
             Juncus longicaudatus (Engelm.) Mack.
             Juncus polycephalus Michx. var. paradoxus Torr.
    Juncus dudleyi Wiegand*+
        Dudley's rush
             Juncus tenuis Willd. var. dudleyi (Wiegand) F.J.Herm.
             Juncus tenuis Willd. var. uniflorus auct. pro parte, non Farw.
    Juncus effusus L.*+
        common rush, soft rush
             Juncus conglomeratus L.
             Juncus effusus L. subsp. solutus
             Juncus effusus L. var. caeruleomontanus H.St.John
             Juncus effusus L. var. compactus auct. non Lej. & Courtois
             Juncus effusus L. var. compactus Lej. & Courtois
             Juncus effusus L. var. conglomeratus (L.) Engelm.
             Juncus effusus L. var. costulatus Fernald
             Juncus effusus L. var. decipiens of Amer. authors, not Buchenau
             Juncus effusus L. var. effusus
             Juncus effusus L. var. pylaei (Laharpe) Fernald & Wiegand
             Juncus effusus L. var. solutus Fernald & Wiegand
             Juncus griscomii Fernald
             Juncus pylaei Laharpe
    Juncus ensifolius Wikstr. var. ensifolius *+
        sword-leaf rush
             Juncus ensifolius Wikstr. var. major Hook.
             Juncus xiphioides E.Mey. var. triandrus Engelm.
    Juncus filiformis L.*+
        thread rush
    Juncus nodosus L.*+
        joint rush, jointed rush, knotted rush
             Juncus nodosus L. var. meridianus F.J.Herm.
             Juncus nodosus L. var. nodosus
             Juncus rostkovii E.Mey.
    Juncus pelocarpus E.Mey.*+
        brown-fruited rush
             Juncus abortivus Chapm.
             Juncus pelocarpus E.Mey. f. submersus Fernald
             Juncus pelocarpus E.Mey. var. crassicaudex Engelm.
             Juncus pelocarpus E.Mey. var. pelocarpus
             Juncus pelocarpus E.Mey. var. sabulonensis H.St.John
    Juncus squarrosus L.*+
        mosquito rush
    Juncus tenuis Willd.*+
        path rush, poverty rush, roadside rush
             Juncus macer S.F.Gray
             Juncus macer S.F.Gray f. williamsii (Fernald) F.J.Herm.
             Juncus macer S.F.Gray var. williamsii (Fernald) Fernald
             Juncus tenuis Willd. f. williamsii (Fernald) F.J.Herm.
             Juncus tenuis Willd. var. multicornis E.Mey.
             Juncus tenuis Willd. var. tenuis
             Juncus tenuis Willd. var. williamsii Fernald
  Genus: Luzula
    Luzula acuminata Raf. var. acuminata *+
        hairy wood rush
             Luzula carolinae S.Watson var. saltuensis (Fernald) Fernald
             Luzula saltuensis Fernald
    Luzula multiflora (Ehrh.) Lej. subsp. multiflora*+
        common wood rush
             Juncus campestris L. var. multiflorus Retz.
             Juncus multiflorus Ehrh.
             Luzula campestris (L.) DC. var. multiflora (Retz.) Celak.
Family: Juncaginaceae
  Genus: Triglochin
    Triglochin maritima L.*+
        arrow-grass, common bog arrow-grass, seaside arrow-grass
             Triglochin concinna Burtt Davy
             Triglochin concinna Burtt Davy var. debilis (M.E.Jones) J.T.Howell
             Triglochin debilis (M.E.Jones) A.Löve & D.Löve
             Triglochin elata Nutt.
             Triglochin maritimum L. var. elata (Nutt.) A.Gray
Family: Lamiaceae
  Genus: Ajuga
    Ajuga genevensis L.*+
        blue bugle, Geneva bugle, standing bugle
  Genus: Clinopodium
    Clinopodium vulgare L.*+
        wild-basil
             Clinopodium vulgare L. var. diminutum Simon
             Clinopodium vulgare L. var. neogaea (Fernald) C.F.Reed
             Satureja vulgaris (L.) Fritsch
             Satureja vulgaris (L.) Fritsch var. diminuta (Simon) Fernald & Wiegand
             Satureja vulgaris (L.) Fritsch var. neogaea Fernald
  Genus: Dracocephalum
    Dracocephalum parviflorum Nutt.*+
        American dragonhead
             Moldavica parviflora (Nutt.) Britton
  Genus: Galeopsis
    Galeopsis tetrahit L.*+
        brittle-stem hemp-nettle, common hemp-nettle, hemp-nettle
    Galeopsis tetrahit L. var. bifida (Boenn.) Lej. & Courtois+
        brittle-stem hemp-nettle, common hemp-nettle, hemp-nettle
             Galeopsis bifida Boenn.
    Galeopsis tetrahit L. var. tetrahit +
        brittle-stem hemp-nettle, common hemp-nettle, hemp-nettle
  Genus: Glechoma
    Glechoma hederacea L. var. micrantha Moric.+
        creeping-Charlie, gill-over-the-ground, ground-ivy
             Glechoma hederacea L. var. parviflora (Benth.) House
             Nepeta hederacea (L.) Trevis. var. parviflora Benth.
  Genus: Leonurus
    Leonurus cardiaca L.*+
        lion's-tail, motherwort
  Genus: Lycopus
    Lycopus americanus Muhl. ex W.P.C.Barton*+
        American water-horehound, common water-horehound
             Lycopus americanus Muhl. ex W.P.C.Barton var. longii Benner
             Lycopus americanus Muhl. ex W.P.C.Barton var. scabrifolius Fernald
             Lycopus sinuatus Elliott
    Lycopus uniflorus Michx.*+
        northern bugleweed, northern water-horehound
             Lycopus virginicus L. var. pauciflorus Benth.
  Genus: Mentha
    Mentha arvensis L. var. canadensis (L.) Kuntze*+
        field mint, wild mint
             Mentha arvensis auct. non L.
             Mentha arvensis L. subsp. borealis
             Mentha arvensis L. subsp. haplocalyx
             Mentha arvensis L. var. glabrata (Benth.) Fernald
             Mentha arvensis L. var. lanata Piper
             Mentha arvensis L. var. sativa auct. non Benth.
             Mentha arvensis L. var. villosa (Benth.) S.R.Stewart
             Mentha arvensis L. f. glabrata (Benth.) S.R.Stewart var. villosa (Benth.) S.R.Stewart
             Mentha canadensis L.
             Mentha glabrior (Hook.) Rydb.
             Mentha penardii (Briq.) Rydb.
  Genus: Monarda
    Monarda fistulosa L. subsp. fistulosa*+
        bee balm, wild bergamot
             Monarda fistulosa L. f. albescens Farw.
             Monarda fistulosa L. var. mollis (L.) Benth. subsp. fistulosa
             Monarda fistulosa L. var. fistulosa
             Monarda fistulosa L. var. mollis (L.) Benth.
             Monarda fistulosa L. f. albiflora (Farw.) Sherff var. mollis (L.) Benth.
             Monarda mollis L.
             Monarda mollis L. f. albiflora Farw.
             Monarda scabra Beck
  Genus: Nepeta
    Nepeta cataria L.*+
        catnip
  Genus: Physostegia
    Physostegia virginiana (L.) Benth. subsp. virginiana*+
        false dragonhead, obedience
             Dracocephalum denticulatum Aiton
             Dracocephalum formosius (Lunell) Rydb.
             Dracocephalum virginianum L.
             Physostegia denticulata (Aiton) Britton
             Physostegia formosior Lunell
             Physostegia granulosa Fassett
             Physostegia speciosa (Sweet) Sweet
             Physostegia speciosa (Sweet) Sweet var. glabriflora Fassett
             Physostegia virginiana (L.) Benth. var. elongata B.Boivin
             Physostegia virginiana (L.) Benth. var. formosior (Lunell) B.Boivin
             Physostegia virginiana (L.) Benth. var. granulosa (Fassett) Fernald
             Physostegia virginiana (L.) Benth. var. speciosa (Sweet) A.Gray
             Physostegia virginiana (L.) Benth. var. virginiana
  Genus: Prunella
    Prunella vulgaris L.*+
        heal-all, lawn prunella, self-heal
    Prunella vulgaris L. subsp. lanceolata+
        lance self-heal
             Prunella pennsylvanica Willd. var. lanceolata W.P.C.Barton
             Prunella vulgaris L. var. elongata Benth.
             Prunella vulgaris L. var. lanceolata (W.P.C.Barton) Fernald
             Prunella vulgaris L. f. iodocalyx Fernald var. lanceolata (W.P.C.Barton) Fernald
  Genus: Scutellaria
    Scutellaria galericulata L.*+
        common skullcap, marsh skullcap
             Scutellaria epilobiifolia A.Ham.
             Scutellaria galericulata L. subsp. pubescens
             Scutellaria galericulata L. var. epilobiifolia (A.Ham.) Jordal
             Scutellaria galericulata L. var. pubescens Benth.
    Scutellaria lateriflora L.*+
        blue skullcap, mad-dog skullcap
             Scutellaria lateriflora L. var. lateriflora
  Genus: Stachys
    Stachys palustris L.*+
        hedge-nettle, marsh hedge-nettle, woundwort
    Stachys palustris L. subsp. pilosa+
        hedge-nettle, marsh hedge-nettle
             Stachys palustris L. var. pilosa (Nutt.) Fernald
             Stachys pilosa Nutt.
             Stachys pilosa Nutt. var. pilosa
    Stachys tenuifolia Willd. var. tenuifolia *+
        narrow-leaved hedge-nettle, smooth hedge-nettle
             Stachys glabra Riddell
             Stachys hispida Pursh
             Stachys palustris L. var. hispida (Pursh) B.Boivin
             Stachys tenuifolia Willd. var. hispida (Pursh) Fernald
             Stachys tenuifolia Willd. var. platyphylla Fernald
Family: Lemnaceae
  Genus: Lemna
    Lemna minor L.*+
        common duckweed, lesser duckweed, small duckweed
             Lemna cyclostasa Elliott ex Schleid.
    Lemna trisulca L.*+
        forked duckweed, star duckweed
    Lemna turionifera Landolt*+
        perennial duckweed, Turion duckweed
  Genus: Spirodela
    Spirodela polyrrhiza (L.) Schleid.*+
        giant duckweed, greater duckweed
             Lemna polyrrhiza L.
             Spirodela polyrrhiza (L.) Schleid. var. masonii Daubs
Family: Lentibulariaceae
  Genus: Pinguicula
    Pinguicula vulgaris L.*+
        common butterwort, violet butterwort
             Pinguicula vulgaris L. var. americana A.Gray
  Genus: Utricularia
    Utricularia cornuta Michx.*+
        horned bladderwort, naked bladderwort
             Stomoisia cornuta (Michx.) Raf.
    Utricularia gibba L.*+
        creeping bladderwort, humped bladderwort
             Utricularia biflora Lam.
             Utricularia gibba L. subsp. gibba
             Utricularia obtusa Sw.
             Utricularia pumila Walter
    Utricularia intermedia Hayne*+
        flat-leaved bladderwort, northern bladderwort
    Utricularia minor L.*+
        lesser bladderwort, small bladderwort
    Utricularia resupinata B.D.Greene ex Bigelow*+
        northeastern bladderwort, resupinate bladderwort
             Lecticula resupinata (B.D.Greene ex Bigelow) Barnhart