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Wisflora - Vascular Plant Species

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WISFLORA: Vascular Plant Species

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County: Sheboygan

Family: Aceraceae
  Genus: Acer
    Acer negundo L.
        ash-leaved maple, box elder
    Acer negundo L. var. negundo +
        box elder
             Negundo aceroides (L.) Moench
             Negundo negundo (L.) Karst.
    Acer negundo L. var. violaceum (Kirchn.) H.Jaeger+
        box elder
             Negundo aceroides (L.) Moench subsp. violaceum
    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 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
    Acer X freemanii E.Murray X *+
        Freeman's maple
             Acer rubrum L. X A. saccharinum L.
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 subcordatum Raf.*+
        American water-plantain, common water-plantain, southern water-plantain
             Alisma parviflorum Pursh
             Alisma plantago-aquatica L. subsp. subcordatum
             Alisma plantago-aquatica L. var. parviflorum (Pursh) Torr.
    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 cristata Engelm.*+
        crested arrowhead
             Sagittaria graminea Michx. var. cristata (Engelm.) Bogin
    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
Family: Amaranthaceae
  Genus: Amaranthus
    Amaranthus albus L.*+
        prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth
             Amaranthus albus L. var. pubescens (Uline & W.L.Bray) Fernald
             Amaranthus graecizans auct. non L.
             Amaranthus graecizans L. var. pubescens Uline & W.L.Bray
             Amaranthus pubescens (Uline & W.L.Bray) Rydb.
    Amaranthus blitoides S.Watson*+
        creeping amaranth, mat amaranth, matweed, matweed amaranth, prostratre amaranth, prostrate pigweed
             Amaranthus graecizans auct. non L.
    Amaranthus hybridus L.*+
        green amaranth, green pigweed, smooth amaranth, smooth pigweed
             Amaranthus chlorostachys Willd.
             Amaranthus incurvatus Tim. ex Gren. & Godr.
             Amaranthus patulus Bertol.
    Amaranthus powellii S.Watson*+
        green amaranth, Powell's amaranth, Powell's smooth amaranth, tall amaranth
             Amaranthus bouchonii Thell.
             Amaranthus bracteosus Uline & W.L.Bray
             Amaranthus retroflexus L. var. powellii (S.Watson) B.Boivin
    Amaranthus retroflexus L.*+
        common amaranth, pigweed, redroot, rough amaranth, rough pigweed, wild-beet amaranth
             Amaranthus retroflexus L. var. salicifolius I.M.Johnst.
    Amaranthus retroflexus L. X A. tuberculatus (Moq.) J.D.Sauer+
    Amaranthus tuberculatus (Moq.) J.D.Sauer*+
        rough-fruited amaranth, rough-fruited water-hemp, tall water-hemp
             Acnida altissima Riddell ex Moq.
             Acnida altissima Riddell ex Moq. var. prostrata (Uline & W.L.Bray) Fernald
             Acnida altissima Riddell ex Moq. var. subnuda (S.Watson) Fernald
             Acnida concatenata (Moq.) Small
             Acnida subnuda (S.Watson) Standl.
             Acnida tamariscina (Nutt.) A.W.Wood
             Acnida tamariscina (Nutt.) A.W.Wood var. concatenata (Moq.) Uline & W.L.Bray
             Acnida tamariscina (Nutt.) A.W.Wood var. prostrata Uline & W.L.Bray
             Acnida tamariscina (Nutt.) A.W.Wood var. tuberculata (Moq.) Uline & W.L.Bray
             Acnida tuberculata Moq.
             Acnida tuberculata Moq. var. prostrata (Uline & W.L.Bray) B.L.Rob.
             Acnida tuberculata Moq. var. subnuda S.Watson
             Amaranthus altissimus Riddell
             Amaranthus ambigens Standl.
             Amaranthus cannabinus L. var. concatenata Moq.
             Amaranthus rudis J.D.Sauer
             Amaranthus tamariscinus Nutt.
             Amaranthus tuberculatus (Moq.) J.D.Sauer var. prostratus (Uline & W.L.Bray) B.L.Rob.
             Amaranthus tuberculatus (Moq.) J.D.Sauer var. subnudus S.Watson
  Genus: Froelichia
    Froelichia gracilis (Hook.) Moq.*+
        cotton-weed, slender cotton-weed, slender snake-cotton, small cotton-weed
             Froelichia braunii Standl.
             Oplotheca gracilis Hook.
Family: Anacardiaceae
  Genus: Rhus
    Rhus aromatica Aiton var. aromatica +
        fragrant sumac, squaw-bush
             Rhus aromatica Aiton var. illinoensis (Greene) Rehder
             Rhus canadensis Marshall var. illinoensis (Greene) Fernald
             Schmaltzia crenata (Mill.) Greene
             Schmaltzia illinoensis Greene
             Toxicodendron crenatum Mill.
    Rhus glabra L.*+
        smooth sumac
             Rhus borealis Greene
             Rhus calophylla Greene
             Rhus glabra L. var. laciniata Carrière
             Rhus glabra L. var. occidentalis Torr.
    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
    Toxicodendron vernix (L.) Kuntze*+
        poison sumac, swamp sumac
             Rhus vernix L.
Family: Apiaceae
  Genus: Aethusa
    Aethusa cynapium L.*+
        fool's-parsley
  Genus: Angelica
    Angelica atropurpurea L. var. occidentalis Fassett+
        purple-stem angelica, western great 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: Conium
    Conium maculatum L.+
        poison-hemlock
  Genus: Coriandrum
    Coriandrum sativum L.
        Chinese parsley, coriander
  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: Levisticum
    Levisticum officinale W.D.J.Koch*
        garden lovage
             Hipposelinum levisticum (L.) Britton & Rose
             Levisticum paludapifolium Asch.
             Ligusticum levisticum L.
  Genus: Osmorhiza
    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: Oxypolis
    Oxypolis rigidior (L.) Raf.*+
        common water-dropwort, stiff cowbane
             Oenanthe ambigua Nutt.
             Oxypolis longifolia (Pursh) Small
             Oxypolis rigidior (L.) Raf. var. ambigua (Nutt.) B.L.Rob.
             Oxypolis rigidior (L.) Raf. var. longifolia (Pursh) Britton
             Oxypolis turgida Small
  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
    Sanicula trifoliata E.P.Bicknell+
        beaked sanicle, large-fruited black snakeroot
  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: Taenidia
    Taenidia integerrima (L.) Drude*+
        yellow-pimpernel
             Smyrnium integerrimum L.
  Genus: Zizia
    Zizia aptera (A.Gray) Fernald*+
        heart-leaved golden alexanders, heart-leaved meadow-parsnip
             Thaspium trifoliatum (L.) A.Gray var. apterum A.Gray
             Zizia cordata W.D.J.Koch ex DC.
             Zizia aptera (A.Gray) Fernald var. aptera
             Zizia aptera (A.Gray) Fernald var. occidentalis Fernald
    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
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
  Genus: Symplocarpus
    Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton*+
        skunk-cabbage
             Dracontium foetidum L.
             Spathyema foetida (L.) Raf.
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 quinquefolius L.*+
        American ginseng, ginseng
    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.
    Asclepias tuberosa L. subsp. interior*+
        butterfly milkweed, butterfly-weed, orange milkweed
             Asclepias tuberosa L. subsp. terminalis
             Asclepias tuberosa L. var. interior (Woodson) Shinners
    Asclepias verticillata L.*+
        whorled milkweed
    Asclepias viridiflora Raf.*+
        short green milkweed
             Acerates viridiflora (Raf.) Pursh ex Eaton
             Acerates viridiflora (Raf.) Pursh ex Eaton var. ivesii Britton
             Acerates viridiflora (Raf.) Pursh ex Eaton var. linearis A.Gray
             Asclepias lanceolata Ives
             Asclepias viridiflora Raf. var. lanceolata (Ives) Torr.
             Asclepias viridiflora Raf. var. linearis (A.Gray) Fernald
Family: Aspleniaceae
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 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 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 minus Bernh.*+
        common burdock, lesser burdock
             Arctium minus Bernh. f. laciniatum Clute
             Lappa minor Hill
  Genus: Arnoglossum
    Arnoglossum atriplicifolium (L.) H.Rob.*+
        pale Indian-plantain
             Cacalia atriplicifolia L.
             Cacalia rotundifolia (Raf.) House
             Mesadenia atriplicifolia (L.) Raf.
  Genus: Artemisia
    Artemisia abrotanum L.
        garden sagebrush, southernwood
             Artemisia procera Willd.
    Artemisia absinthium L.+
        absinth sage-wort, absinth wormwood, absinthe, common wormwood, sage-wort
    Artemisia annua L.*+
        annual sage-wort, sweet wormwood
    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
    Artemisia dracunculus L.*+
        dragon sage-wort, dragon wormwood, estragon, false tarragon
             Artemisia dracunculoides Pursh
             Artemisia dracunculina S.Watson
             Artemisia dracunculus L. subsp. dracunculus
             Artemisia dracunculus L. subsp. dracunculina
             Artemisia dracunculus L. subsp. glauca
             Artemisia dracunculoides Pursh var. dracunculina (S.Watson) S.F.Blake
             Artemisia dracunculus L. var. glauca (Pall. ex Willd.) Besser
             Artemisia glauca Pall. ex Willd.
             Artemisia glauca Pall. ex Willd. var. dracunculina (S.Watson) Fernald
             Oligosporus dracunculus (L.) Poljakov
             Oligosporus dracunculus (L.) Poljakov subsp. dracunculinus
             Oligosporus dracunculus (L.) Poljakov subsp. glaucus
    Artemisia ludoviciana Nutt. subsp. ludoviciana*+
        Louisiana sage-wort, western mugwort, white sage
             Artemisia brittonii Rydb.
             Artemisia diversifolia Rydb.
             Artemisia gnaphalodes Nutt.
             Artemisia herriotii Rydb.
             Artemisia ludoviciana Nutt. subsp. typica
             Artemisia ludoviciana Nutt. var. americana (Besser) Fernald
             Artemisia ludoviciana Nutt. var. brittonii (Rydb.) Fernald
             Artemisia ludoviciana Nutt. var. gnaphalodes (Nutt.) Torr. & A.Gray
             Artemisia ludoviciana Nutt. var. latifolia (Besser) Torr. & A.Gray
             Artemisia ludoviciana Nutt. var. ludoviciana
             Artemisia ludoviciana Nutt. var. pabularis (A.Nelson) Fernald
             Artemisia pabularis (A.Nelson) Rydb.
             Artemisia purshiana Besser
             Artemisia purshiana Besser var. latifolia Besser
             Artemisia rhizomata A.Nelson var. pabularis A.Nelson
             Artemisia vulgaris L. subsp. ludoviciana
             Artemisia vulgaris L. var. ludoviciana (Nutt.) Kuntze
    Artemisia pontica L.+
        Roman wormwood
    Artemisia vulgaris L.*+
        common wormwood, mugwort, sage-wort
             Artemisia vulgaris L. var. vulgaris
  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. X A. hesperius A.Gray+
    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 ericoides L. var. ericoides *+
        heath aster, squarrose white aster, white prairie aster
             Aster ericoides L. f. caeruleus (Benke) S.F.Blake
             Aster ericoides L. f. ericoides
             Aster ericoides L. f. gramsii Benke
             Aster ericoides L. subsp. ericoides
             Aster multiflorus Aiton
             Aster multiflorus Aiton var. caeruleus Benke
             Aster multiflorus Aiton var. exiguus Fernald
             Aster polycephalus Rydb.
             Aster scoparius DC.
             Lasallea ericoides (L.) Semple & Brouillet
             Symphyotrichum ericoides (L.) G.L.Nesom
             Symphyotrichum ericoides (L.) G.L.Nesom var. ericoides
             Virgulus ericoides (L.) Reveal & Keener
    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 furcatus E.S.Burgess*+
        forked aster, midwestern white heart-leaved aster
             Aster furcatus E.S.Burgess f. elaciniatus (Benke) Shinners
             Aster furcatus E.S.Burgess f. erythractis Benke
             Aster furcatus E.S.Burgess var. elaciniatus Benke
             Eurybia furcata (E.S.Burgess) G.L.Nesom
    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 laevis L. X A. lanceolatus Willd.+
             Aster laevis L. X A. paniculatus Lam.
    Aster lanceolatus Willd. var. interior (Wiegand) A.G.Jones X A. lanceolatus Willd. var. simplex (Willd.) A.G.Jones+
             Aster lanceolatus Willd. var. interior (Wiegand) Semple & Chmiel. X A. tradescantii L.
             Aster simplex Willd. X A. tradescantii L.
    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 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 novae-angliae L.*+
        New England aster
             Aster novae-angliae L. f. geneseensis House
             Aster novae-angliae L. f. rosarius House
             Aster novae-angliae L. f. roseus (Desf.) Britton
             Aster novae-angliae L. var. monocephalus Farw.
             Aster roseus Desf.
             Lasallea novae-angliae (L.) Semple & Brouillet
             Symphyotrichum novae-angliae (L.) G.L.Nesom
             Virgulus novae-angliae (L.) Reveal & Keener
    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 oolentangiensis Riddell*+
        azure aster, prairie heart-leaved aster, sky-blue aster
             Aster azureus Lindl.
             Aster azureus Lindl. f. incarnatus Farw.
             Aster oolentangiensis Riddell var. oolentangiensis
             Symphyotrichum oolentagiense (Riddell) G.L.Nesom
             Symphyotrichum oolentangiense (Riddell) G.L.Nesom var. oolentangiense
    Aster praealtus Poir.+
        veiny lined aster, willow aster, willow-leaved aster
    Aster praealtus Poir. var. angustior Wiegand+
        veiny lined aster, willow aster, willow-leaved aster
             Aster praealtus Poir. var. subasper (Lindl.) Wiegand
             Symphyotrichum praealtum (Poir.) G.L.Nesom var. angustior (Wiegand) G.L.Nesom
    Aster prenanthoides Muhl. ex Willd.*+
        crooked aster, crooked-stem aster, zigzag aster
             Aster prenanthoides Muhl. ex Willd. f. milwaukeensis Benke
             Symphyotrichum prenanthoides (Muhl. ex Willd.) 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 sericeus Vent.*+
        silky aster, western silvery aster
             Aster sericeus Vent. f. albiligulatus Fassett
             Lasallea sericea (Vent.) Greene
             Symphyotrichum sericeum (Vent.) G.L.Nesom
             Virgulus sericeus (Vent.) Reveal & Keener
    Aster shortii Lindl.*+
        Midwestern blue heart-leaved aster, Short's aster
             Aster camptosorus Small
             Aster shortii Lindl. f. asper Shinners
             Aster shortii Lindl. f. candidus Benke
             Aster shortii Lindl. f. gronemanni Benke
             Aster shortii Lindl. var. monroei Benke
             Symphyotrichum shortii (Lindl.) G.L.Nesom
    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: Balsamita
    Balsamita major Desf.*+
        costmary, mint-geranium
             Balsamita major Desf. var. tanacetoides (Boiss.) Moldenke
             Chrysanthemum balsamita (L.) Baill., non L.
             Chrysanthemum balsamita L. f. tanacetoides (Boiss.) B.Boivin
             Chrysanthemum balsamita L. var. tanacetoides Boiss.
             Pyrethrum balsamita (L.) Willd. var. tanacetoides Boiss.
             Pyrethrum majus (Desf.) Tzvelev
             Tanacetum balsamita L.
  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 coronatus (L.) Britton*+
        northern tickseed-sunflower, tall swamp marigold
             Bidens coronatus (L.) Britton var. brachyodontus Fernald
             Bidens coronatus (L.) Britton var. tenuilobus (A.Gray) Sherff
             Bidens coronatus (L.) Britton var. trichospermus (Michx.) Fernald
             Bidens trichospermus (Michx.) Britton
             Coreopsis trichosperma Michx.
             Coreopsis trichosperma Michx. var. tenuiloba 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
  Genus: Brachyactis
    Brachyactis ciliata (Ledeb.) Ledeb. subsp. angusta*+
        alkali rayless aster
             Aster angustus (Lindl.) Torr. & A.Gray
             Aster brachyactis S.F.Blake
             Brachyactis angusta (Lindl.) Britton
             Tripolium angustum Lindl.
  Genus: Centaurea
    Centaurea biebersteinii DC.*+
        spotted knapweed
             Acosta maculosa auct. non Holub
             Centaurea maculosa auct. non Lam.
    Centaurea cyanus L.*+
        bachelor's-button, bluebottle, cornflower
             Leucacantha cyanus (L.) Nieuwl. & Lunell
    Centaurea jacea L.*+
        brown knapweed, brown-ray knapweed
    Centaurea nigra L.+
        black knapweed, lesser knapweed
             Centaurea nigra L. var. radiata DC.
    Centaurea scabiosa L.*+
        greater knapweed, hard-heads
  Genus: Cichorium
    Cichorium intybus L.*+
        blue-sailors, chicory
             Cichorium intybus L. f. albiflorum Neuman
             Cichorium intybus L. f. roseum Neuman
  Genus: Cirsium
    Cirsium altissimum (L.) Spreng.*+
        tall thistle, wood thistle
             Carduus altissimus L.
             Cirsium altissimum (L.) Spreng. var. biltmoreanum Petr.
             Cirsium iowense (Pammel) Fernald
             Cirsium X iowense (Pammel) Fernald (pro sp.) X
             Cnicus iowensis Pammel
    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 flodmanii (Rydb.) Arthur*+
        Flodman's thistle, prairie thistle
             Carduus oblanceolatus Rydb.
             Cirsium nebraskense (Britton) Lunell var. discissum Lunell
             Cirsium oblanceolatum (Rydb.) K.Schum.
    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 pitcheri (Torr. ex Eaton) Torr. & A.Gray*+
        dune thistle, sand dune thistle
             Cnicus pitcheri Torr. ex Eaton
    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: Cnicus
    Cnicus benedictus L.+
        blessed thistle
  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. lanceolata +
        lance-leaf tickseed, long-stalk tickseed, sand coreopsis, sand tickseed
  Genus: Echinops
    Echinops sphaerocephalus L.*+
        great globe-thistle
  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 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 pulchellus Michx. var. pulchellus *+
        Robin's-plantain
             Erigeron bellidifolius Muhl. ex Willd.
             Erigeron pulchellus Michx. var. typicus Cronquist
    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
    Eupatorium purpureum L.*+
        green-stemmed Joe-Pye-weed, purple Joe-Pye-weed
             Eupatorium falcatum Michx.
             Eupatorium holzingeri Rydb.
             Eupatoriadelphus purpureus (L.) R.M.King & H.Rob.
             Eupatorium purpureum L. var. holzingeri (Rydb.) E.Lamont
             Eupatorium purpureum L. var. purpureum
    Eupatorium rugosum Houtt. var. rugosum *+
        white snakeroot
             Ageratina altissima (L.) R.M.King & H.Rob.
             Ageratum altissimum L., non Eupatorium altissimum L.
             Ageratina altissima (L.) R.M.King & H.Rob. var. altissima
             Eupatorium rugosum Houtt. var. chlorolepis Fernald
             Eupatorium rugosum Houtt. var. tomentellum (B.L.Rob.) S.F.Blake
             Eupatorium rugosum Houtt. var. villicaule (Fernald) S.F.Blake
             Eupatorium urticaefolium Reichard
             Eupatorium urticaefolium Reichard var. tomentellum B.L.Rob.
  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: Gaillarida
    Gaillarida pulchella Foug. var. pulchella
        fire-wheel
  Genus: Galinsoga
    Galinsoga quadriradiata Ruiz & Pav.*+
        common quick-weed, Peruvian-daisy, quick-weed, shaggy-soldier
             Ageratum perplexans M.F.Johnson
             Galinsoga aristulata E.P.Bicknell
             Galinsoga bicolorata H.St.John & D.White
             Galinsoga caracasana (DC.) Sch.Bip.
             Galinsoga ciliata (Raf.) S.F.Blake
             Galinsoga parviflora Cav. var. hispida DC.
  Genus: Gnaphalium
    Gnaphalium obtusifolium L. var. obtusifolium *+
        cat's-foot, fragrant cudweed, old-field-balsam, old-field cudweed, rabbit-tobacco
             Pseudognaphalium obtusifolium (L.) Hilliard & B.L.Burtt
             Pseudognaphalium obtusifolium (L.) Hilliard & B.L.Burtt subsp. obtusifolium
    Gnaphalium purpureum L.
        purple cudweed
             Gamochaeta purpurea (L.) Cabrera
    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 amarum (Raf.) H.Rock var. amarum *+
        bitter-weed, narrow-leaved sneezeweed, yellow-dicks
             Gaillardia amara Raf.
             Helenium tenuifolium Nutt.
    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.
  Genus: Helianthus
    Helianthus annuus L.*+
        common sunflower, garden sunflower
             Helianthus annuus L. subsp. jaegeri
             Helianthus annuus L. subsp. lenticularis
             Helianthus annuus L. subsp. texanus
             Helianthus annuus L. var. annuus
             Helianthus annuus L. var. lenticularis (Douglas ex Lindl.) Steyerm.
             Helianthus annuus L. var. macrocarpus (DC.) Cockerell
             Helianthus annuus L. var. texanus (Heiser) Shinners
             Helianthus aridus Rydb.
             Helianthus lenticularis Douglas ex Lindl.
    Helianthus decapetalus L.+
        forest sunflower, pale sunflower, thin-leaved sunflower
             Helianthus scrophulariifolius Britton
             Helianthus tracheliifolius Mill.
    Helianthus divaricatus L.*+
        divaricate sunflower, woodland sunflower
             Helianthus divaricatus L. var. angustifolius Kuntze
    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 grosseserratus M.Martens*+
        saw-tooth sunflower
             Helianthus grosseserratus M.Martens f. plenifolius Wadmond
             Helianthus grosseserratus M.Martens subsp. maximus
             Helianthus grosseserratus M.Martens var. hypoleucus A.Gray
             Helianthus instabilis E.Watson
    Helianthus maximilianii Schrad.*+
        Maximilian's sunflower
             Helianthus dalyi Britton
    Helianthus occidentalis Riddell subsp. occidentalis*+
        few-leaved sunflower, naked-stemmed sunflower, western sunflower
             Helianthus dowellianus M.A.Curtis
             Helianthus occidentalis Riddell var. dowellianus (M.A.Curtis) Torr. & A.Gray
             Helianthus occidentalis Riddell var. occidentalis
    Helianthus pauciflorus Nutt. subsp. subrhomboideus+
        few-leaved sunflower, stiff sunflower
             Helianthus laetiflorus Pers. var. subrhomboideus (Rydb.) Fernald
             Helianthus rigidus (Cass.) Desf. subsp. laetiflorus
             Helianthus rigidus (Cass.) Desf. subsp. subrhomboideus
             Helianthus rigidus (Cass.) Desf. var. subrhomboideus (Rydb.) Cronquist
             Helianthus subrhomboideus Rydb.
    Helianthus strumosus L.*+
        pale-leaved woodland sunflower, rough-leaved sunflower
             Helianthus montanus E.Watson
             Helianthus saxicola Small
    Helianthus X ambiguus (A.Gray) Britton (pro sp.) X +
        ambiguous sunflower
    Helianthus X laetiflorus Pers. (pro sp.) X *+
        cheerful sunflower, hybrid prairie sunflower, mountain sunflower
             Helianthus laetiflorus Pers.
             Helianthus scaberrimus Elliott
  Genus: Heliopsis
    Heliopsis helianthoides (L.) Sweet*+
        false sunflower, ox-eye, sunflower-everlasting
    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 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 scabrum Michx.*+
        rough hawkweed, sticky hawkweed
             Hieracium scabrum Michx. var. scabrum
             Hieracium scabrum Michx. var. tonsum Fernald & H.St.John
    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: Inula
    Inula helenium L.*+
        elecampane
    Inula salicina L.
        willow-leaved yellow-head
  Genus: Iva
    Iva annua L. var. annua +
        annual marsh-elder, rough marsh-elder
             Iva ciliata Willd.
    Iva xanthifolia Nutt.*+
        bur-weed marsh-elder, giant sump-weed
             Cyclachaena xanthifolia (Nutt.) Fresen.
  Genus: Krigia
    Krigia biflora (Walter) S.F.Blake*+
        false-dandelion, orange dwarf-dandelion
    Krigia biflora (Walter) S.F.Blake subsp. biflora+
        false-dandelion, orange dwarf-dandelion
             Adopogon virginicum (L.) Kuntze
             Cynthia virginica (L.) D.Don
             Hyoseris biflora Walter
             Krigia amplexicaulis Nutt.
             Krigia biflora (Walter) S.F.Blake var. biflora
  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 ludoviciana (Nutt.) Riddell+
        prairie lettuce, prairie wild lettuce, western wild lettuce
             Lactuca campestris Greene
             Lactuca campestris Greene var. typica Wiegand
             Sonchus ludovicianus Nutt.
    Lactuca pulchella (Pursh) DC.*+
        showy blue lettuce
             Lactuca oblongifolia Nutt.
             Lactuca tatarica (L.) C.A.Mey. subsp. pulchella
             Lactuca tatarica (L.) C.A.Mey. var. heterophylla (Nutt.) B.Boivin
             Lactuca tatarica (L.) C.A.Mey. var. pulchella (Pursh) Breitung
             Mulgedium heterophyllum Nutt.
             Sonchus pulchellus Pursh
             Sonchus tataricus L., pro parte
    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: Leontodon
    Leontodon autumnalis L.+
        autumn-dandelion, fall-dandelion, hawk's-bit
  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 cylindracea Michx.*+
        cylindrical blazing-star, few-headed blazing-star
             Lacinaria cylindracea (Michx.) Kuntze
             Liatris cylindracea Michx. f. bartelii Steyerm.
             Liatris cylindracea Michx. var. solitaria MacMill.
  Genus: Madia
    Madia glomerata Hook.+
        mountain tarweed, stinking tarweed
  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: Onopordum
    Onopordum acanthium L.+
        cotton thistle, Scotch thistle
  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
  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
  Genus: Pluchea
    Pluchea camphorata (L.) DC.
        camphor pluchea, marsh fleabane
  Genus: Polymnia
    Polymnia canadensis L.*+
        pale-flowered leaf-cup, white-flowered leaf-cup
             Polymnia canadensis L. f. radiata (A.Gray) Fassett
             Polymnia canadensis L. var. radiata A.Gray
             Polymnia radiata (A.Gray) Small
  Genus: Prenanthes
    Prenanthes alba L.*+
        lion's-foot, rattlesnake-root, white-lettuce
             Nabalus albus (L.) Hook.
  Genus: Ratibida
    Ratibida columnifera (Nutt.) Wooton & Standl.*+
        columnar coneflower, long-headed coneflower
             Lepachys columnifera (Nutt.) J.F.Macbr.
             Lepachys columnaris (Pursh) Torr. & A.Gray
             Obeliscaria pulcherrima DC.
             Ratibida columnaris (Sims) D.Don
             Ratibida columnaris (Sims) D.Don var. pulcherrima (DC.) D.Don
             Rudbeckia columnifera Nutt.
             Rudbeckia columnaris Pursh, non Sims
             Rudbeckia columnaris Sims
  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: Silphium
    Silphium terebinthinaceum Jacq. var. terebinthinaceum *+
        basal-leaved rosinweed, prairie-dock, prairie rosinweed
             Silphium rumicifolium Small
  Genus: Solidago
    Solidago canadensis L.*+
        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. 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 nemoralis Aiton*+
        dyer's-weed goldenrod, gray goldenrod, old-field goldenrod
    Solidago nemoralis Aiton subsp. decemflora+
        field goldenrod, old-field goldenrod
             Solidago decemflora DC.
             Solidago longipetiolata Mack. & Bush
             Solidago nemoralis Aiton subsp. longipetiolata
             Solidago nemoralis Aiton var. decemflora (DC.) Fernald
             Solidago nemoralis Aiton var. longipetiolata (Mack. & Bush) E.J.Palmer & Steyerm.
             Solidago pulcherrima A.Nelson
    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 patula Muhl. ex Willd. var. patula *+
        rough-leaved goldenrod, round-leaved goldenrod, swamp goldenrod
    Solidago ptarmicoides (Nees) B.Boivin*+
        prairie goldenrod, upland white goldenrod
             Aster ptarmicoides (Nees) Torr. & A.Gray
             Aster ptarmicoides (Nees) Torr. & A.Gray var. georgianus A.Gray
             Doellingeria ptarmicoides Nees
             Inula alba Nutt.
             Oligoneuron album (Nutt.) G.L.Nesom
             Unamia alba (Nutt.) Rydb.
             Unamia ptarmicoides (Nees) Greene
    Solidago riddellii Frank ex Riddell*+
        Riddell's goldenrod
             Oligoneuron riddellii (Frank ex Riddell) Rydb.
    Solidago rigida L. subsp. rigida+
        rigid goldenrod, stiff goldenrod
             Oligoneuron grandiflorum (Raf.) Small
             Oligoneuron rigidum (L.) Small
             Oligoneuron rigidum (L.) Small var. rigidum
             Solidago grandiflora Raf.
             Solidago rigida L. var. rigida
    Solidago speciosa Nutt. var. rigidiuscula Torr. & A.Gray+
        showy goldenrod
             Solidago rigidiuscula (Torr. & A.Gray) Porter
             Solidago speciosa Nutt. var. angustata Torr. & A.Gray
    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
    Solidago ulmifolia Muhl. ex Willd. var. ulmifolia *+
        elm-leaved goldenrod
  Genus: Sonchus
    Sonchus arvensis L.*+
        field sow-thistle, perennial sow-thistle
    Sonchus arvensis L. var. arvensis +
        field sow-thistle, perennial sow-thistle
             Sonchus arvensis L. subsp. arvensis
             Sonchus arvensis L. var. shumovichii B.Boivin
             Sonchus arvensis L. var. typicus Beck
    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.
    Sonchus oleraceus L.*+
        common sow-thistle, field sow-thistle
  Genus: Tanacetum
    Tanacetum parthenium (L.) Sch.Bip.*+
        feverfew
             Chrysanthemum parthenium (L.) Bernh.
             Matricaria parthenium L.
    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.
    Tragopogon porrifolius L.*+
        oyster-plant, salsify, vegetable-oyster
  Genus: Xanthium
    Xanthium spinosum L.+
        spiny cocklebur
    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.
  Genus: Podophyllum
    Podophyllum peltatum L.*+
        May-apple, wild mandrake
             Podophyllum peltatum L. f. aphyllum Plitt
             Podophyllum peltatum L. f. biltmoreanum Steyerm.
             Podophyllum peltatum L. f. deamii Raymond
             Podophyllum peltatum L. f. polycarpum (Clute) Plitt
Family: Betulaceae
  Genus: Alnus
    Alnus glutinosa (L.) Gaertn.*+
        black alder, European alder
             Alnus alnus (L.) Britton
             Alnus vulgaris Hill
             Betula alnus L. var. glutinosa L.
    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
  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 pendula Roth*+
        European white birch, weeping birch
    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: Bignoniaceae
  Genus: Catalpa
    Catalpa speciosa (Warder ex Barney) Warder ex Engelm.*+
        northern catalpa
Family: Boraginaceae
  Genus: Amsinckia
    Amsinckia lycopsoides Lehm.*+
        tarweed fiddle-neck
             Amsinckia barbata Greene
             Amsinckia hispida (Ruiz & Pav.) I.M.Johnst.
             Amsinckia idahoensis M.E.Jones
             Amsinckia parviflora A.Heller
             Benthamia lycopsoides (Lehm.) Lindl. ex Druce
    Amsinckia tessellata A.Gray
        bristly fiddle-neck, devil's-lettuce,
  Genus: Anchusa
    Anchusa arvensis (L.) M.Bieb.+
        Annual bugloss, small bugloss
             Lycopsis arvensis L.
  Genus: Buglossoides
    Buglossoides arvensis (L.) I.M.Johnst.*+
        bastard-alkanet, corn gromwell
             Lithospermum arvense L.
  Genus: Cynoglossum
    Cynoglossum boreale Fernald*+
        northern wild comfrey
             Cynoglossum virginianum L. var. boreale (Fernald) Cooperr.
    Cynoglossum officinale L.*+
        common hound's-tongue, gypsy-flower
             Cynoglossum officinale L. f. bicolor (Willd.) Lehm.
  Genus: Echium
    Echium vulgare L.*+
        blueweed, common viper's-bugloss, viper's-bugloss
  Genus: Hackelia
    Hackelia virginiana (L.) I.M.Johnst.*+
        beggar's-lice, stickseed, wild comfrey
             Lappula virginiana (L.) Greene
             Myosotis virginiana L.
  Genus: Lappula
    Lappula redowskii (Hornem.) Greene var. redowskii +
        western stickseed
             Echinospermum redowskii (Hornem.) Lehm. var. occidentalis S.Watson
             Lappula echinata Gilib. var. occidentalis (S.Watson) B.Boivin
             Lappula occidentalis (S.Watson) Greene
             Lappula occidentalis (S.Watson) Greene var. occidentalis
             Lappula redowskii (Hornem.) Greene var. occidentalis (S.Watson) Rydb.
    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 canescens (Michx.) Lehm.*+
        hoary puccoon
             Batschia canescens Michx.
    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.
    Lithospermum incisum Lehm.*+
        fringed puccoon, narrow-leaved gromwell, narrow-leaved puccoon
             Batschia linearifolia (Goldie) Small
             Lithospermum angustifolium Michx.
             Lithospermum linearifolium Goldie
             Lithospermum mandanense Spreng.
    Lithospermum latifolium Michx.*+
        American gromwell, broad-leaved gromwell
  Genus: Myosotis
    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: Onosmodium
    Onosmodium bejariense A.DC. var. hispidissimum (Mack.) B.L.Turner+
        false gromwell, marble-seed, soft-hair marble-seed
             Lithospermum carolinianum auct. non Lam.
             Onosmodium hispidissimum Mack.
             Onosmodium hispidissimum Mack. var. macrospermum Mack. & Bush
             Onosmodium molle Michx. subsp. hispidissimum
             Onosmodium molle Michx. var. hispidissimum (Mack.) Cronquist
  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: Alyssum
    Alyssum alyssoides (L.) L.+
        pale alyssum, pale madwort, yellow alyssum
             Alyssum calycinum L.
             Clypeola alyssoides (L.) L.
  Genus: Arabis
    Arabis canadensis L.+
        sickle-pod
    Arabis glabra (L.) Bernh.*+
        tower mustard, tower rock-cress
             Arabis glabra (L.) Bernh. var. glabra
             Turritis glabra L.
    Arabis hirsuta (L.) Scop. var. adpressipilis (M.Hopkins) Rollins+
        hairy rock-cress
             Arabis pycnocarpa M.Hopkins var. adpressipilis M.Hopkins
    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 laevigata (Muhl. ex Willd.) Poir. var. laevigata *+
        smooth bank-cress, smooth rock-cress
             Arabis heterophylla Nutt.
             Arabis lyrifolia DC.
             Arabis viridis Harger var. heterophylla (Nutt.) Farw.
             Turritis laevigata Muhl. ex Willd.
    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: Barbarea
    Barbarea orthoceras Ledeb.+
        American yellow-rocket, northern winter-cress
             Barbarea americana Rydb.
             Barbarea orthoceras Ledeb. var. dolichocarpa Fernald
    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: Brassica
    Brassica juncea (L.) Czern.*+
        brown mustard, Chinese mustard, Indian mustard
             Brassica integrifolia (Willd.) Rupr.
             Brassica japonica Thunb.
             Brassica juncea (L.) Czern. var. crispifolia L.H.Bailey
             Brassica juncea (L.) Czern. var. japonica (Thunb.) L.H.Bailey
             Brassica juncea (L.) Czern. var. juncea
             Brassica willdenowii Boiss.
             Sinapis juncea L.
    Brassica nigra (L.) W.D.J.Koch*+
        black mustard
             Sinapis nigra L.
  Genus: Cakile
    Cakile edentula (Bigelow) Hook.*+
        American sea-rocket
             Bunias edentula Bigelow
             Cakile americana Nutt.
             Cakile californica A.Heller
             Cakile edentula (Bigelow) Hook. subsp. californica
             Cakile edentula (Bigelow) Hook. subsp. edentula
             Cakile edentula (Bigelow) Hook. var. edentula subsp. edentula
             Cakile edentula (Bigelow) Hook. var. californica (A.Heller) Fernald
             Cakile edentula (Bigelow) Hook. var. edentula
    Cakile lacustris (Fernald) Pobed.*+
        sea-rocket
             Cakile edentula (Bigelow) Hook. var. lacustris Fernald subsp. edentula
             Cakile edentula (Bigelow) Hook. subsp. lacustris
             Cakile edentula (Bigelow) Hook. var. lacustris Fernald
  Genus: Camelina
    Camelina sativa (L.) Crantz+
        gold-of-pleasure, large-seed false flax
             Camelina parodii Ibarra & La Porte
             Camelina sativa (L.) Crantz subsp. sativa
             Myagrum sativum 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 bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb.*+
        spring-cress
             Arabis bulbosa Schreb. ex Muhl.
             Arabis rhomboidea Pers.
             Cardamine rhomboidea (Pers.) DC.
    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 diphylla (Michx.) A.W.Wood*+
        broad-leaved toothwort, crinkle-root
             Dentaria diphylla Michx.
             Dentaria incisa Small
    Cardamine douglassii (Torr.) Britton*+
        limestone bitter-cress, purple spring-cress
             Arabis douglassii Torr.
             Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. var. purpurea (Torr.) Britton, Sterns & Poggenb.
             Cardamine rhomboidea (Pers.) DC. var. purpurea Torr.
    Cardamine pensylvanica Muhl. ex Willd.*+
        Pennsylvania bitter-cress
             Cardamine hirsuta L. var. pensylvanica Muhl. ex Willd.
             Cardamine pensylvanica Muhl. ex Willd. var. brittoniana Farw.
    Cardamine pratensis L. var. palustris Wimm. & Grab.*+
        cuckoo-flower
  Genus: Descurainia
    Descurainia pinnata (Walter) Britton subsp. brachycarpa*+
        green tansy mustard, pinnate tansy mustard, western tansy mustard
             Descurainia brachycarpa (Richardson) O.E.Schulz
             Descurainia pinnata (Walter) Britton var. brachycarpa (Richardson) Fernald
             Sisymbrium brachycarpum Richardson
             Sisymbrium canescens Nutt. var. brachycarpa (Richardson) S.Watson
             Sophia brachycarpa (Richardson) Rydb.
    Descurainia sophia (L.) Webb ex Prantl*+
        flix-weed, herb-Sophia, tansy mustard
             Sisymbrium sophia L.
             Sophia sophia (L.) Britton
  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
    Lepidium perfoliatum L.*+
        clasping cress, clasping pepper-weed
    Lepidium ramosissimum A.Nelson var. bourgeauanum (Thell.) Rollins
        Bourgeau's pepper-weed
             Lepidium bourgeauanum Thell.
             Lepidium densiflorum Schrad. var. bourgeauanum (Thell.) C.L.Hitchc.
    Lepidium virginicum L. var. virginicum *+
        common peppergrass, poor-man's-pepper, Virginia pepper-weed
             Lepidium virginicum L. var. typicum C.L.Hitchc.
  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: Neslia
    Neslia paniculata (L.) Desv.+
        ball mustard
             Myagrum paniculatum L.
  Genus: Raphanus
    Raphanus sativus L.*+
        garden radish, wild radish
             Raphanus raphanistrum L. var. sativus (L.) Beck
  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.
    Rorippa sylvestris (L.) Besser*+
        creeping yellow-cress
             Radicula sylvestris (L.) Druce
  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: Sisymbrium
    Sisymbrium altissimum L.*+
        tall tumble mustard
             Norta altissima (L.) Britton
    Sisymbrium officinale (L.) Scop.*+
        hedge-mustard
             Erysimum officinale L.
             Sisymbrium officinale (L.) Scop. var. leiocarpum DC.
             Sisymbrium officinale (L.) Scop. var. officinale
  Genus: Thlaspi
    Thlaspi arvense L.*+
        field pennycress
Family: Cabombaceae
  Genus: Brasenia
    Brasenia schreberi J.F.Gmel.*+
        water-shield
             Brasenia peltata Pursh
Family: Caesalpiniaceae
  Genus: Gleditsia
    Gleditsia triacanthos L.*+
        honey locust
             Caesalpiniodes triacanthum (L.) Kuntze
             Calliandra inermis (L.) Druce
             Gleditsia inermis L.
             Gleditsia triacanthos L. f. inermis (L.) Zabel
             Gleditsia triacanthos L. var. inermis (L.) Castigl.
Family: Callitrichaceae
  Genus: Callitriche
    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 americana L.*+
        American bellflower, tall bellflower
             Campanulastrum americanum (L.) Small
             Campanula americana L. var. illinoensis (Fresen.) Farw.
    Campanula aparinoides Pursh var. grandiflora Holz.+
        marsh bellflower
             Campanula aparinoides Pursh var. uliginosa (Rydb.) Gleason
             Campanula uliginosa Rydb.
    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: Cannabis
    Cannabis sativa L.*+
        hemp, Indian hemp, marijuana
             Cannabis indica Lam.
             Cannabis indica Lam. var. kafiristanica Vavilov
             Cannabis ruderalis Janisch.
             Cannabis sativa L. subsp. indica
             Cannabis sativa L. var. indica subsp. indica
             Cannabis sativa L. var. kafiristanica (Vavilov) E.Small & Cronquist subsp. indica
             Cannabis sativa L. subsp. sativa
             Cannabis sativa L. var. sativa subsp. sativa
             Cannabis sativa L. var. spontanea Vavilov subsp. sativa
  Genus: Humulus
    Humulus lupulus L. var. lupuloides E.Small+
        common hop, hop
             Humulus americanus Nutt.
             Humulus lupulus L. subsp. americanus
Family: Capparidaceae
  Genus: Cleome
    Cleome serrulata Pursh*+
        Rocky Mountain bee-plant, stinking-clover, toothed spider-flower
  Genus: Polanisia
    Polanisia dodecandra (L.) DC. subsp. dodecandra*+
        rough-seed clammy-weed
             Cleome dodecandra L.
             Polanisia dodecandra (L.) DC. var. dodecandra
             Polanisia graveolens Raf.
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 dioica L. var. dioica +
        limber honeysuckle, mountain honeysuckle, red honeysuckle
             Lonicera dioica L. f. trifolia Vict. & Rolland var. dioica
    Lonicera dioica L. var. glaucescens (Rydb.) Butters+
        wild honeysuckle
             Lonicera glaucescens Rydb.
    Lonicera hirsuta Eaton*+
        hairy honeysuckle
             Lonicera hirsuta Eaton var. interior Gleason
    Lonicera morrowii A.Gray*+
        Asian fly honeysuckle, Morrow's honeysuckle
    Lonicera oblongifolia (Goldie) Hook.*+
        swamp fly honeysuckle
    Lonicera reticulata Raf.*+
        grape honeysuckle, yellow honeysuckle
             Lonicera prolifera (Kirchn.) Booth ex Rehder
             Lonicera prolifera (Kirchn.) Booth ex Rehder var. glabra Gleason
             Lonicera prolifera (Kirchn.) Booth ex Rehder var. prolifera
             Lonicera sullivantii A.Gray
    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 X bella Zabel X *+
        showy bush honeysuckle, white-bell honeysuckle
  Genus: Sambucus
    Sambucus canadensis L. var. canadensis *+
        American elder, elderberry
             Sambucus canadensis L. var. laciniata A.Gray
             Sambucus nigra L. subsp. canadensis
    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: Symphoricarpos
    Symphoricarpos albus (L.) S.F.Blake var. albus +
        snowberry
             Symphoricarpos albus (L.) S.F.Blake var. pauciflorus (W.J.Robbins ex A.Gray) S.F.Blake
             Symphoricarpos pauciflorus W.J.Robbins ex A.Gray
             Symphoricarpos racemosus Michx.
             Symphoricarpos racemosus Michx. var. pauciflorus W.J.Robbins ex A.Gray
    Symphoricarpos occidentalis Hook.*+
        western snowberry, wolfberry
    Symphoricarpos orbiculatus Moench*+
        buck-brush, coral-berry, Indian currant
             Symphoricarpos symphoricarpos (L.) MacMill.
  Genus: Triosteum
    Triosteum aurantiacum E.P.Bicknell*+
        early horse-gentian, orange-fruit horse-gentian
    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.*+
        cranberry viburnum, European cranberry-bush, high-bush cranberry
    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
    Viburnum rafinesquianum Schult. var. rafinesquianum +
        arrow-wood, downy arrow-wood
             Viburnum affine Bush ex C.K.Schneid. var. hypomalacum S.F.Blake
Family: Caryophyllaceae
  Genus: Agrostemma
    Agrostemma githago L.+
        corn cockle
  Genus: Arenaria
    Arenaria lateriflora L.*+
        grove sandwort, wood sandwort
             Arenaria lateriflora L. var. angustifolia (Regel) H.St.John
             Arenaria lateriflora L. var. tayloriae H.St.John
             Moehringia lateriflora (L.) Fenzl
             Moehringia lateriflora (L.) Fenzl var. angustifolia Regel
    Arenaria stricta Michx. subsp. stricta*+
        rock sandwort, stiff sandwort
             Alsine michauxii Fenzl
             Arenaria macra A.Nelson & J.F.Macbr.
             Arenaria michauxii (Fenzl) Hook.f.
             Arenaria stricta Michx. subsp. macra
             Arenaria stricta Michx. var. puberulenta (M.Peck) C.L.Hitchc.
             Arenaria stricta Michx. var. stricta
             Arenaria stricta Michx. var. uliginosa (Schleich. ex Lam. & DC.) B.Boivin
             Arenaria uliginosa Schleich. ex Lam. & DC.
             Minuartia michauxii (Fenzl) Farw.
             Minuopsis michauxii (Fenzl) W.A.Weber
             Minuartia michauxii (Fenzl) Farw. var. michauxii
             Sabulina stricta (Michx.) Small
  Genus: Cerastium
    Cerastium arvense L. subsp. arvense+
        field chickweed, starry grasswort
    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.
    Cerastium nutans Raf.*+
        nodding chickweed
             Cerastium nutans Raf. var. nutans
  Genus: Dianthus
    Dianthus armeria L.*+
        Deptford pink
  Genus: Gypsophila
    Gypsophila muralis L.*+
        cushion baby's-breath, low baby's-breath
             Psammophiliella muralis (L.) Ikonn.
  Genus: Lychnis
    Lychnis flos-cuculi L.*+
        ragged-robin
  Genus: Petrorhagia
    Petrorhagia saxifraga (L.) Link*+
        saxifrage pink
             Dianthus saxifragus L.
             Tunica saxifraga (L.) Scop.
  Genus: Sagina
    Sagina procumbens L.*+
        bird's-eye pearl-wort
             Sagina procumbens L. var. compacta Lange
  Genus: Saponaria
    Saponaria officinalis L.*+
        bouncing-bet, soapwort
             Lychnis saponaria Jess.
  Genus: Scleranthus
    Scleranthus annuus L.*+
        annual knawel, German knotgrass
  Genus: Silene
    Silene antirrhina L.*+
        sleepy catchfly, sleepy silene
             Silene antirrhina L. f. apetala Farw.
             Silene antirrhina L. f. bicolor Farw.
             Silene antirrhina L. f. deaneana Fernald
             Silene antirrhina L. var. confinis Fernald
             Silene antirrhina L. var. depauperata Rydb.
             Silene antirrhina L. var. divaricata B.L.Rob.
             Silene antirrhina L. var. laevigata Engelm. & A.Gray
             Silene antirrhina L. var. subglaber Engelm. & A.Gray
             Silene antirrhina L. var. vaccarifolia Rydb.
    Silene armeria L.*+
        sweet-William catchfly, sweet-William silene
    Silene csereii Baumg.*+
        Balkan catchfly, glaucous campion
    Silene dioica (L.) Clairv.
        morning campion, red catchfly, red campion, red cockle
             Lychnis dioica L.
    Silene gallica L.
        common catchfly, French catchfly
             Silene anglica L.
    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: 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 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. longifolia +
        long-leaved stitchwort
             Alsine longifolia (Muhl. ex Willd.) Britton
  Genus: Vaccaria
    Vaccaria hispanica (Mill.) Rauschert+
        cow-herb, cow soapwort
             Saponaria hispanica Mill.
             Saponaria vaccaria L.
             Vaccaria pyramidata Medik.
             Vaccaria segetalis Garcke ex Aschers.
             Vaccaria vaccaria (L.) Britton
             Vaccaria vulgaris Host
Family: Celastraceae
  Genus: Celastrus
    Celastrus scandens L.*+
        American bittersweet, climbing bittersweet
  Genus: Euonymus
    Euonymus atropurpurea Jacq. var. atropurpurea *+
        burning-bush, eastern wahoo
             Evonymus atropurpurea Jacq.
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
Family: Chenopodiaceae
  Genus: Atriplex
    Atriplex argentea Nutt.*
        silver-scale, silver-scale saltbush
    Atriplex hortensis L.*+
        garden orache
             Atriplex nitens Schkuhr
    Atriplex patula L.*+
        common orache, spear-scale, spear orach, spear saltbush
             Atriplex patula L. subsp. patula
             Atriplex patula L. var. bracteata auct. non Westerl.
             Atriplex patula L. var. hastata A.Gray
             Atriplex patula L. var. japonica Level.
             Atriplex patula L. var. patula
    Atriplex prostrata Boucher ex DC.+
        fat-hen, thin-leaf orach, triangle orache
             Atriplex hastata sensu Aellen, non L.
             Atriplex latifolia Wahlenb.
             Atriplex patula L. subsp. hastata
             Atriplex patula L. var. hastata auct. non (L.) A.Gray
             Atriplex patula L. var. triangularis (Willd.) Thorne & Welsh
             Atriplex triangularis Willd.
    Atriplex rosea L.+
        red orache, tumbling orach, tumbling saltweed
  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 berlandieri Moq. var. bushianum (Aellen) Cronquist+
        Bush's goosefoot, pit-seed goosefoot
             Chenopodium bushianum Aellen
             Chenopodium bushianum Aellen var. acutidentatum Aellen
             Chenopodium paganum auct. non Rchb.
    Chenopodium bonus-henricus L.
        good-King-Henry
    Chenopodium capitatum (L.) Ambrosi var. capitatum *+
        blite goosefoot, Indian ink, Indian-paint, strawberry-blite,
             Blitum capitatum L.
    Chenopodium glaucum L. var. glaucum *+
             Chenopodium glaucum L. subsp. euglaucum
    Chenopodium murale L.+
        nettle-leaved goosefoot, sowbane
    Chenopodium pratericola Rydb.+
        desert goosefoot, narrow-leaf goosefoot
             Chenopodium desiccatum A.Nelson var. leptophylloides (Murr) Wahl
             Chenopodium leptophyllum Nutt. ex S.Watson, sensu Swink & Wilhelm (1994)
             Chenopodium petiolare Kunth var. leptophylloides Murr
             Chenopodium pratericola Rydb. subsp. eupratericola
             Chenopodium pratericola Rydb. var. leptophylloides (Murr) Aellen
             Chenopodium subglabrum (S.Watson) A.Nelson, sensu Voss (1985)
    Chenopodium rubrum L. var. rubrum +
    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 pallasii Steven
        Pallas bugseeed, Siberian bugseed
    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: Dysphania
    Dysphania ambrosioides (L.) Mosyakin & Clemants
        Mexican-tee, wormwood, worm-seed
             Ambrina ambrosioides (L.) Spach
             Chenopodium ambrosioides L.
             Chenopodium ambrosioides L. subsp. eu-ambrosioides
             Chenopodium ambrosioides L. f. integrifolium (Fenzl) Aellen var. typicum (Speg.) Aellen subsp. eu-ambrosioides
             Chenopodium ambrosioides L. var. suffruticosum (Willd.) Aellen subsp. eu-ambrosioides
             Chenopodium ambrosioides L. var. typicum (Speg.) Aellen subsp. eu-ambrosioides
             Chenopodium ambrosioides L. var. ambrosioides
             Chenopodium ambrosioides L. var. integrifolium Fenzl
             Chenopodium ambrosioides L. var. suffruticosom (Willd.) Asch. & Graebn.
             Chenopodium ambrosioides L. var. typicum Speg.
             Chenopodium suffruticosom Willd.
             Teloxys ambrosioides (L.) W.A.Weber
    Dysphania botrys (L.) Mosyakin & Clemants+
        feather-geranium, Jerusalem-oak, Jerusalem-oak, goosefoot
             Botrydium botrys (L.) Small
             Chenopodium botrys L.
             Teloxys botrys (L.) W.A.Weber
  Genus: Kochia
    Kochia scoparia (L.) Schrad. subsp. scoparia*+
        burning bush, common kockia, Mexican fireweed, summer-cypress
  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: Helianthemum
    Helianthemum bicknellii Fernald*+
        Bicknell's rock-rose, hoary frostweed, rock-rose
             Crocanthemum bicknellii (Fernald) Barnhart
             Crocanthemum majus sensu Britton
    Helianthemum canadense (L.) Michx.*+
        common rock-rose, long-branch frostweed
             Cistus canadensis L.
             Crocanthemum canadense (L.) Britton
             Helianthemum canadense (L.) Michx. var. sabulonum Fernald
  Genus: Lechea
    Lechea intermedia Legg. ex Britton var. intermedia *+
        intermediate pinweed, large-pod pinweed
             Lechea intermedia Legg. ex Britton var. typica Hodgdon
Family: Commelinaceae
  Genus: Commelina
    Commelina communis L.*+
        Asiatic dayflower, common dayflower
             Commelina communis L. var. communis
             Commelina communis L. var. ludens (Miq.) C.B.Clake
             Commelina debilis Ledeb.
             Commelina ludens Miq.
Family: Convolvulaceae
  Genus: Calystegia
    Calystegia hederacea Wall.
        Japanese bindweed, Japanese false bindweed
    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.
  Genus: Convolvulus
    Convolvulus arvensis L.*+
        field bindweed
             Convolvulus ambigens House
             Convolvulus arvensis L. var. obtusifolius Choisy
             Convolvulus incanus auct. non Vahl
             Strophocaulos arvensis (L.) Small
  Genus: Ipomoea
    Ipomoea hederacea Jacq.*+
        ivy-leaved morning-glory
             Ipomoea barbigera Sweet
             Ipomoea desertorum House
             Ipomoea hederacea Jacq. var. integriuscula A.Gray
             Ipomoea nil (L.) Roth, sensu Lange (1998)
             Pharbitis barbigera (Sweet) G.Don
             Pharbitis hederacea (Jacq.) Choisy
    Ipomoea purpurea (L.) Roth*+
        common morning-glory, tall morning-glory
             Convolvulus purpureus L.
             Ipomoea diversifolia Lindl.
             Ipomoea hirsutula J.Jacq.
             Ipomoea purpurea (L.) Roth var. diversifolia (Lindl.) O'Donell
             Pharbitis purpurea (L.) Voigt
Family: Cornaceae
  Genus: Cornus
    Cornus alternifolia L.f.*+
        alternate-leaved dogwood, pagoda dogwood
             Swida alternifolia (L.f.) Small
    Cornus amomum Mill. var. schuetzeana (C.A.Mey.) Rickett*+
        blue-fruited dogwood, silky dogwood
             Cornus amomum Mill. subsp. obliqua
             Cornus obliqua Raf.
             Cornus purpusii Koehne
             Cornus sericea L. var. schuetzeana C.A.Mey.
    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: Sedum
    Sedum acre L.*+
        gold-moss stonecrop, wall-pepper, yellow sedum
    Sedum alboroseum Baker+
        garden orpine, garden stonecrop
             Hylotelephium erythrostictum (Miq.) H.Ohba
             Sedum erythrostictum sensu Mast., non Miq.
             Sedum X erythrostictum Miq. X
    Sedum telephium L. subsp. telephium*+
        live-forever, witch's-moneybags
             Hylotelephium telephium (L.) H.Ohba subsp. telephium
             Sedum purpureum (L.) Schult.
             Sedum telephium L. subsp. purpureum
             Sedum telephium L. var. purpureum L.
             Sedum triphyllum (Haw.) S.F.Gray
Family: Cucurbitaceae
  Genus: Echinocystis
    Echinocystis lobata (Michx.) Torr. & A.Gray*+
        balsam-apple, wild-cucumber
             Micrampelis lobata (Michx.) Greene
             Sicyos lobata Michx.
  Genus: Sicyos
    Sicyos angulatus L.*+
        bur-cucumber
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
    Juniperus virginiana L. var. virginiana *+
        eastern red-cedar
             Juniperus virginiana L. subsp. crebra
             Juniperus virginiana L. var. crebra Fernald & Griscom
             Sabina virginiana (L.) Antoine
  Genus: Thuja
    Thuja occidentalis L.*+
        eastern arborvitae, northern white-cedar
Family: Cuscutaceae
  Genus: Cuscuta
    Cuscuta cephalanthi Engelm.+
        buttonbush dodder
             Grammica cephalanthi (Engelm.) Hadac & Chrtek
    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: Carex
    Carex albursina E.Sheld.*+
        blunt-scaled wood sedge, white bear sedge
             Carex laxiflora Lam. var. latifolia Boott
    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 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 blanda Dewey*+
        common wood sedge, eastern woodland sedge, wood sedge
             Carex blanda Dewey var. blanda
             Carex laxiflora Lam. var. blanda (Dewey) Boott
    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 canescens L.*+
        gray bog sedge, silvery sedge
    Carex cephalophora Muhl. ex Willd.*+
        oval-headed sedge, short-headed bracted sedge, wood-bank sedge
    Carex cephaloidea (Dewey) Dewey*+
        clustered bracted sedge
             Carex muricata L. var. cephaloidea Dewey
             Carex sparganioides Muhl. ex Willd. var. cephaloidea (Dewey) J.Carey
    Carex comosa Boott*+
        bristly sedge
    Carex communis L.H.Bailey var. communis *+
        Colonial oak sedge, fibrous-root sedge
    Carex cristatella Britton*+
        crested oval sedge, crested sedge
             Carex cristatella Britton f. catelliformis (Farw.) Fernald
             Carex cristata Schwein.
    Carex deweyana Schwein. var. deweyana *+
        Dewey's sedge
             Carex deweyana Schwein. subsp. deweyana
    Carex diandra Schrank*+
        bog panicled sedge, lesser panicled sedge
    Carex digitalis Willd. var. digitalis *+
        narrow-leaved wood sedge, slender woodland sedge
             Carex digitalis Willd. var. asymmetrica Fernald
    Carex disperma Dewey*+
        soft-leaf sedge, two-seeded bog sedge
             Carex tenella Schkuhr
    Carex eburnea Boott*+
        bristle-leaf sedge
    Carex flava L.*+
        large yellow sedge, yellow sedge
             Carex flava L. var. fertilis Peck
             Carex flava L. var. flava
             Carex flava L. var. gaspensis Fernald
             Carex flava L. var. graminis L.H.Bailey
             Carex flava L. var. laxior (Kük.) Gleason
             Carex flava L. var. rectirostra Gaudin
             Carex laxior (Kük.) Mack.
             Carex nevadensis Boiss. & Reut. subsp. flavella
    Carex gracilescens Steud.*+
        slender loose-flower sedge, slender sedge, slender wood sedge
             Carex laxiflora Lam. var. gracillima Boott
    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 gravida L.H.Bailey*+
        heavy sedge, long-awned bracted sedge
             Carex gravida L.H.Bailey var. gravida
             Carex lunelliana Mack.
    Carex grisea Wahlenb.*+
        eastern narrow-leaved sedge, gray sedge
             Carex amphibola auct. mult.
             Carex amphibola Steud. var. turgida Fernald
    Carex hirtifolia Mack.*+
        hairy sedge, hairy wood sedge, pubescent sedge
    Carex hitchcockiana Dewey*+
        hairy wood sedge, Hitchcock's 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 interior L.H.Bailey*+
        inland sedge, inland star sedge
             Carex interior L.H.Bailey f. keweenawensis (F.J.Herm.) Fernald
             Carex interior L.H.Bailey subsp. charlestonensis
             Carex interior L.H.Bailey var. keweenawensis F.J.Herm.
             Carex scirpoides Sckuhr ex Willd., 1805, non Michx., 1803
    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 laxiflora Lam.*+
        beach wood sedge, broad loose-flower sedge, wood sedge
             Carex anceps Muhl.
             Carex laxiflora Lam. var. laxiflora
             Carex laxiflora Lam. var. patulifolia (Dewey) J.Carey
             Carex laxiflora Lam. var. serrulata F.J.Herm.
    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 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 normalis Mack.*+
        greater straw sedge, intermediate sedge, spreading oval sedge
             Carex mirabilis Dewey
    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 pellita Willd.*+
        broad-leaved woolly sedge
             Carex lanuginosa auct. non Michx.
             Carex lasiocarpa Ehrh. var. latifolia (Boeck.) Gilly
    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 projecta Mack.*+
        loose-headed oval sedge, necklace 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 richardsonii R.Br.*+
        prairie hummock sedge, Richardson's 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 sparganioides Muhl. ex Willd.*+
        bur-reed sedge, loose-headed bracted sedge
             Carex sparganioides Muhl. ex Willd. var. sparganioides
    Carex sprengelii Dewey ex Spreng.*+
        long-beaked sedge, Sprengel's sedge
             Carex longirostris Torr., non Krock.
    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 tenera Dewey var. tenera +
        marsh straw sedge, narrow-leaved oval sedge, quill sedge
             Carex straminea Willd. ex Schkuhr var. tenera (Dewey) Barratt
    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 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.
  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 diandrus Torr.*+
        low cyperus, umbrella flat sedge
             Pycreus diander (Torr.) C.B.Clarke
    Cyperus erythrorhizos Muhl.*+
        red-rooted sedge
             Cyperus cupreus J.Presl & C.Presl
             Cyperus erythrorhizos Muhl. var. cupreus (J.Presl & C.Presl) Kük.
             Cyperus halei Torr. ex Britton
             Cyperus occidentalis Torr.
             Cyperus washingtonensis Gand.
    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 odoratus L.+
        flat sedge, fragrant cyperus, rusty flat sedge
             Cyperus acicularis (Nees) Steud.
             Cyperus californicus S.Watson
             Cyperus eggersii Boeck.
             Cyperus engelmannii Steud.
             Cyperus ferax Rich.
             Cyperus ferruginescens Boeck.
             Cyperus ferax Rich. subsp. engelmanii
             Cyperus ferax Rich. subsp. speciosus
             Cyperus ferax Rich. var. speciosus (Britton) Kük.
             Cyperus haenkei J.Presl & C.Presl
             Cyperus huarmensis (Kunth) M.C.Johnst.
             Cyperus longispicatus Norton
             Cyperus macrocephalus Liebm.
             Cyperus michauxianus Schult.
             Cyperus odoratus L. var. acicularis (Schrad. ex Nees) O'Neill
             Cyperus odoratus L. var. engelmannii (Steud.) J.Rich.Carter, S.D.Jones & J.K.Wipff
             Cyperus odoratus L. var. squarrosus (Britton) Gilly
             Cyperus oxycarioides Britton
             Cyperus speciosus Vahl
             Cyperus speciosus Vahl var. ferruginescens (Boeck.) Britton
             Cyperus speciosus Vahl var. squarrosus Britton
             Cyperus squarrosus L. var. parvus Britton
             Diclidium aciculare Schrad. ex Nees
             Diclidium odoratum (L.) Schrad. ex Nees
             Mariscus ferax (Rich.) C.B.Clarke
             Mariscus huarmensis Kunth
             Torulinium confertum Desv. ex Ham.
             Torulinium eggersii (Boeck.) C.B.Clarke
             Torulinium ferax (Rich.) Urb.
             Torulinium macrocephalum (Liebm.) T.Koyama
             Torulinium michauxianum (Schult.) C.B.Clarke
             Torulinium odoratum (L.) S.S.Hooper
    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
    Cyperus strigosus L.*+
        false nut sedge, straw-colored cyperus
             Cyperus hansenii Britton
             Cyperus stenolepis Torr.
             Cyperus strigosus L. f. robustior Kunth
             Cyperus strigosus L. var. capitatus Boeck.
             Cyperus strigosus L. var. hansenii (Britton) Kük.
             Cyperus strigosus L. var. multiflorus Geise
             Cyperus strigosus L. var. robustior (Kunth) Britton
             Cyperus strigosus L. var. stenolepis (Torr.) Kük.
             Mariscus stenolepis (Torr.) C.B.Clarke
             Mariscus strigosus (L.) C.B.Clarke
  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 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 intermedia Schult.*+
        matted spike-rush
             Eleocharis intermedia Schult. var. habereri Fernald
             Eleocharis reclinata Kunth
             Scirpus intermedius Muhl.
    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.
  Genus: Eriophorum
    Eriophorum angustifolium Honck. subsp. angustifolium*+
        cotton-grass
             Eriophorum angustifolium Honck. var. angustifolium
             Eriophorum polystachion auct. non L.
    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 viridicarinatum (Engelm.) Fernald*+
        dark-scale cotton-grass, tall cotton-grass
             Eriophorum latifolium Hoppe var. viridicarinatum Engelm.
  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
  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 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 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 pendulus Muhl.*+
        rufous bulrush
             Scirpus lineatus auct. non Michx.
  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: Dioscoreaceae
  Genus: Dioscorea
    Dioscorea villosa L.*+
        colic-root, wild yam, yam root
             Dioscorea cliffortiana Lam.
             Dioscorea glauca Muhl. ex Bartlett
             Dioscorea hexaphylla Raf.
             Dioscorea hirticaulis Bartlett
             Dioscorea lloydiana E.H.L.Krause
             Dioscorea longifolia Raf.
             Dioscorea megaptera Raf.
             Dioscorea paniculata Michx.
             Dioscorea paniculata Michx. var. glabrifolia Bartlett
             Dioscorea pruinosa Kunth
             Dioscorea quaternata J.F.Gmel.
             Dioscorea quaternata J.F.Gmel. var. glauca (Muhl. ex Bartlett) Fernald
             Dioscorea quaternata J.F.Gmel. var. quaternata
             Dioscorea quinata J.F.Gmel.
             Dioscorea repanda Raf.
             Dioscorea villosa L. f. glabrifolia (Bartlett) Fernald
             Dioscorea villosa L. subsp. glabrifolia
             Dioscorea villosa L. subsp. glauca
             Dioscorea villosa L. subsp. hirticaulis
             Dioscorea villosa L. subsp. quaternata
             Dioscorea villosa L. var. glabrifolia (Bartlett) S.F.Blake
             Dioscorea villosa L. var. hirticaulis (Bartlett) Ahles
             Dioscorea villosa L. var. vera Prain & Burkill
             Dioscorea villosa L. var. villosa
             Dioscorea waltheri Desf.
Family: Dipsacaceae
  Genus: Dipsacus
    Dipsacus fullonum L. subsp. sylvestris*+
        common teasel, wild teasel
             Dipsacus sylvestris Huds.
Family: Droseraceae
  Genus: Drosera
    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 protrusa (Weath.) Blasdell+
        creeping fragile fern, lowland bladder fern
             Cystopteris fragilis (L.) Bernh. var. protrusa Weath.
    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 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
  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 acrostichoides (Michx.) Schott*+
        Christmas fern
             Nephrodium acrostichoides Michx.
             Polystichum acrostichoides (Michx.) Schott var. acrostichoides
             Polystichum acrostichoides (Michx.) Schott var. schweinitzii (Beck) Small
Family: Elaeagnaceae
  Genus: Shepherdia
    Shepherdia argentea (Pursh) Nutt.*+
        buffalo-berry, silver buffalo-berry
             Elaeagnus utilis A.Nelson
             Hippophae argentea Pursh
             Lepargyrea argentea (Pursh) Greene
    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 scirpoides Michx.*+
        dwarf scouring rush, sedge horsetail
    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 nelsonii (A.A.Eaton) J.H.Schaffn. (pro sp.) X +
        Nelson's horsetail, Nelson's scouring rush
             Equisetum nelsonii (A.A.Eaton) J.H.Schaffn.
             Equisetum variegatum Schleich. ex F.Weber & D.Mohr var. nelsonii A.A.Eaton
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: 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 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
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: Acalypha
    Acalypha gracilens A.Gray subsp. gracilens+
        short-stalk copper-leaf, slender three-seeded-mercury
             Acalypha gracilens A.Gray var. gracilens
    Acalypha rhomboidea Raf.*+
        rhombic copper-leaf, three-seeded-mercury
             Acalypha virginica L. var. rhomboidea (Raf.) Cooperr.
  Genus: Chamaesyce
    Chamaesyce glyptosperma (Engelm.) Small*+
        rib-seed sand-mat, ridge-seeded spurge
             Euphorbia glyptosperma Engelm.
    Chamaesyce nutans (Lag.) Small*+
        eye-bane, nodding spurge
             Chamaesyce maculata auct. non (L.) Small
             Chamaesyce preslii (Guss.) Arthur
             Euphorbia maculata auct. non L.
             Euphorbia nutans Lag.
             Euphorbia preslii Guss.
    Chamaesyce polygonifolia (L.) Small*+
        seaside spurge
             Euphorbia polygonifolia L.
  Genus: Croton
    Croton glandulosus L. var. septentrionalis Müll.Arg.*+
        sand croton, tooth-leaved croton, tropical croton, vente conmigo
    Croton monanthogynus Michx.+
        one-seed croton, prairie-tea
  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
    Euphorbia helioscopia L.+
        mad-woman's-milk, sun spurge, wart-weed
             Galarhoeus helioscopius (L.) Haw.
             Tithymalus helioscopius (L.) Hill
    Euphorbia peplus L.+
        petty spurge
             Galarhoeus peplus (L.) Haw.
             Tithymalus peplus (L.) Hill
Family: Fabaceae
  Genus: Amorpha
    Amorpha canescens Pursh*+
        lead-plant
             Amorpha brachycarpa E.J.Palmer
             Amorpha canescens Pursh f. canescens
             Amorpha canescens Pursh f. glabrata (A.Gray) Fassett
             Amorpha canescens Pursh var. glabrata A.Gray
  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.
    Astragalus crassicarpus Nutt. var. crassicarpus *+
        ground-plum, ground-plum milk-vetch, prairie-plum
             Astragalus caryocarpus Ker Gawl.
             Astragalus succulentus Richardson
             Geoprumnon crassicarpum (Nutt.) Rydb. ex Small
             Geoprumnon succulentum (Richardson) Rydb.
    Astragalus neglectus (Torr. & A.Gray) E.Sheld.*+
        Cooper's milk-vetch
             Astragalus cooperi A.Gray
             Phaca neglecta Torr. & A.Gray
  Genus: Cicer
    Cicer arietinum L.
        chickpea, garbanzo
  Genus: Coronilla
    Coronilla varia L.*+
        crown-vetch, purple crown-vetch
             Securigera varia (L.) Lassen
  Genus: Dalea
    Dalea purpurea Vent. var. purpurea *+
        purple prairie-clover, violet prairie-clover
             Petalostemon molle Rydb.
             Petalostemon purpureum (Vent.) Rydb.
             Petalostemon purpureum (Vent.) Rydb. f. pubescens (A.Gray) Fassett
             Petalostemon purpureum (Vent.) Rydb. f. purpureum
             Petalostemon purpureum (Vent.) Rydb. var. molle (Rydb.) B.Boivin
  Genus: Desmodium
    Desmodium canadense (L.) DC.*+
        Canadian tick-trefoil, showy tick-trefoil
             Hedysarum canadense L.
             Meibomia canadensis (L.) Kuntze
    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
    Desmodium nudiflorum (L.) DC.*+
        bare-stemmed tick-trefoil, naked tick-trefoil
             Desmodium nudiflorum (L.) DC. f. foliolatum (Farw.) Fassett
             Desmodium nudiflorum (L.) DC. f. nudiflorum
             Desmodium nudiflorum (L.) DC. f. personatum Fassett
             Hedysarum nudiflorum L.
             Meibomia nudiflora (L.) Kuntze
             Meibomia nudiflora (L.) Kuntze f. foliolata Farw.
  Genus: Genista
    Genista tinctoria L.*+
        dyer's greenweed
  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 sativus L.
        chickling pea, white pea-vine
    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: 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.*+
        alfalfa
    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: Robinia
    Robinia hispida L.*+
        bristly locust, rose-acacia
    Robinia pseudoacacia L.*+
        black locust
             Robinia pseudoacacia L. var. rectissima (L.) Raber
  Genus: Stylosanthes
    Stylosanthes biflora (L.) Britton, Sterns & Poggenb.
        pencil-flower, sidebark pencil-flower
  Genus: Tephrosia
    Tephrosia virginiana (L.) Pers.*+
        goat's-rue, rabbit-pea, Virginia tephrosia
             Cracca latidens Small
             Cracca mohrii Rydb.
             Cracca virginiana L.
             Tephrosia holosericea Nutt.
             Tephrosia latidens (Small) Standl.
             Tephrosia mohrii (Rydb.) Godfrey
             Tephrosia virginiana (L.) Pers. var. glabra Nutt.
             Tephrosia virginiana (L.) Pers. var. holosericea (Nutt.) Torr. & A.Gray
             Tephrosia virginiana (L.) Pers. var. virginiana
  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 dubium Sibth.+
        little hop clover, suckling clover
    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 incarnatum L.+
        crimson clover
             Trifolium incarnatum L. var. elatius Gibelli & Belli
    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 caroliniana Walter*+
        Carolina vetch, pale vetch, wood vetch
             Vicia hugeri Small
    Vicia cracca L. subsp. cracca+
        bird vetch, cow vetch
             Vicia cracca L. var. cracca
    Vicia hirsuta (L.) S.F.Gray+
        hairy vetch, tiny vetch
    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: Fagus
    Fagus grandifolia Ehrh.*+
        American beech, beechnut
             Fagus americana Sweet
             Fagus ferruginea Aiton
             Fagus ferruginea Aiton var. caroliniana Loudon
             Fagus grandifolia Ehrh. subsp. heterophylla
             Fagus grandifolia Ehrh. var. caroliniana (Loudon) Fernald & Rehder
             Fagus grandifolia Ehrh. var. grandifolia
  Genus: Quercus
    Quercus alba L.*+
        white oak
             Quercus alba L. var. subcaerulea Pickens & M.C.Pickens
             Quercus alba L. var. subflavea Pickens & M.C.Pickens
    Quercus bicolor Willd.*+
        swamp white oak
             Quercus bicolor Willd. var. angustifolia Dippel
             Quercus bicolor Willd. var. cuneiformis Dippel
    Quercus ellipsoidalis E.J.Hill*+
        Hill's oak, northern pin oak
             Quercus ellipsoidalis E.J.Hill var. kaposianensis J.W.Moore
    Quercus macrocarpa Michx.*+
        bur oak
             Quercus macrocarpa Michx. f. olivaeformis (F.Michx.) Trel.
             Quercus macrocarpa Michx. subsp. olivaeformis
             Quercus macrocarpa Michx. var. depressa (Nutt.) Engelm.
             Quercus macrocarpa Michx. var. macrocarpa
             Quercus macrocarpa Michx. var. olivaeformis (F.Michx.) A.Gray
             Quercus mandanensis Rydb.
             Quercus obtusiloba Michx. var. depressa Nutt.
             Quercus olivaeformis F.Michx.
    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 aurea Willd. subsp. aurea*+
        golden corydalis, scrambled eggs
             Capnoides aureum (Willd.) Kuntze
          &