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Family: Cyperaceae
  Genus: Carex

    Carex adusta Boott*+

        brown oval sedge, lesser brown sedge
    Carex aggregata Mack.
        glomerate sedge
             Carex agglomerata Mack.
             Carex sparganioides Muhl. ex Willd. var. aggregata (Mack.) Gleason
    Carex albicans Willd. ex Spreng.*+

        oak sedge, white-tinge sedge
    Carex albursina E.Sheld.*+

        blunt-scaled wood sedge, white bear sedge
             Carex laxiflora Lam. var. latifolia Boott
    Carex albicans Willd. ex Spreng. var. albicans +

        blunt-scaled oak sedge, dry woods sedge, oak sedge, white-tinge sedge
             Carex artitecta Mack.
             Carex artitecta Mack. var. subtilirostris F.J.Herm.
             Carex emmonsii Dewey ex Torr. var. muhlenbergii (A.Gray) Rettig
             Carex nigromarginata Schwein. var. muhlenbergii (A.Gray) Gleason
             Carex varia Muhl., non Host
    Carex albicans Willd. ex Spreng. var. emmonsii (Dewey ex Torr.) Rettig+

        Emmons' sedge, oak sedge, sharp-scaled oak sedge
             Carex emmonsii Dewey ex Torr.
    Carex alopecoidea Tuck.*+

        brown-headed fox sedge, foxtail sedge
    Carex amphibola Steud.
        eastern narrow-leaved sedge
             Carex amphibola Steud. var. amphibola
    Carex annectens (E.P.Bicknell) E.P.Bicknell
        yellow-headed fox sedge
             Carex bicknelii Camus, 1910, non Britton 1896
    Carex annectens (E.P.Bicknell) E.P.Bicknell var. annectens *+

        yellow-headed fox sedge
             Carex annectens (E.P.Bicknell) E.P.Bicknell var. ambigua (Barratt ex Boott) Gleason
             Carex brachyglossa Mack.
             Carex setacea Dewey var. ambigua (Barratt ex Boott) Fernald
             Carex vulpinoidea Michx. var. ambigua Barratt ex Boott
             Carex xanthocarpa E.P.Bicknell var. annectens E.P.Bicknell
    Carex annectens (E.P.Bicknell) E.P.Bicknell var. xanthocarpa (Kük.) Wiegand
        yellow-headed fox sedge
             Carex xanthocarpa E.P.Bicknell
    Carex aquatilis Wahlenb.
        long-bracted tussock sedge, water sedge
    Carex aquatilis Wahlenb. var. aquatilis *+

        long-bracted tussock sedge, water sedge
             Carex acutinella Mack.
             Carex aquatilis Wahlenb. subsp. altior
             Carex aquatilis Wahlenb. var. altior (Rydb.) Fernald
             Carex interimus Maguire
             Carex pachystoma T.Holm
             Carex suksdorfii Kük.
             Carex variabilis L.H.Bailey
    Carex aquatilis Wahlenb. var. substricta Kük.
        long-bracted tussock sedge, water sedge
             Carex substricta (Kük.) Mack.
    Carex arcta Boott*+

        bear sedge, northern clustered sedge
             Carex canescens L. var. oregana L.H.Bailey
             Carex canescens L. var. polystachya Boott
             Carex heleonastes L.f. var. scabriuscula Kük.
             Carex kunzei Olney
    Carex arctata Boott*+

        drooping woodland sedge
             Carex arctata Boott var. faxonii L.H.Bailey
    Carex assiniboinensis W.Boott*+

        Assiniboine sedge
    Carex atherodes Spreng.*+

        hairy-leaved lake sedge, slough sedge
    Carex atherodes Spreng. X C. trichocarpa Willd.+

        
    Carex atlantica L.H.Bailey subsp. atlantica
        Atlantic star sedge, prickly bog sedge
             Carex atlantica L.H.Bailey var. atlantica
             Carex incomperta E.P.Bicknell
    Carex aurea Nutt.*+

        elk sedge, golden sedge, golden-fruited sedge
    Carex backii W.Boott*+

        Back's sedge, Rocky Mountain sedge
             Carex durifolia L.H.Bailey
    Carex bebbii (L.H.Bailey) Olney ex Fernald*+

        Bebb's oval sedge, Bebb's sedge
             Carex tribuloides Wahlenb. var. bebbii L.H.Bailey
    Carex bicknellii Britton*+

        Bicknell's oval sedge, Bicknell's sedge
             Carex bicknellii Britton var. bicknellii
    Carex blanda Dewey*+

        common wood sedge, eastern woodland sedge, wood sedge
             Carex blanda Dewey var. blanda
             Carex laxiflora Lam. var. blanda (Dewey) Boott
    Carex brevior (Dewey) Mack. ex Lunell*+

        fescue sedge, plains oval sedge
             Carex festucacea Schkuhr ex Willd. var. brevior (Dewey) Fernald
             Carex straminea Willd. ex Schkuhr var. brevior Dewey
    Carex bromoides Schkuhr ex Willd.
        brome-like sedge
    Carex bromoides Schkuhr ex Willd. subsp. bromoides*+

        brome-like sedge
             Carex bromoides Schkuhr ex Willd. var. bromoides
    Carex brunnescens (Pers.) Poir.
        brownish sedge, green bog sedge
    Carex brunnescens (Pers.) Poir. subsp. brunnescens
        brownish sedge, green bog sedge
    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 bushii Mack.*+

        Bush's sedge, long-scaled green sedge
             Carex caroliniana Schwein. var. cuspidata (Dewey) Shinners
    Carex buxbaumii Wahlenb.*+

        Buxbaum's sedge
             Carex buxbaumii Wahlenb. f. heterostachya Andersson
             Carex buxbaumii Wahlenb. var. anticostensis Raymond
             Carex holmiana Mack.
             Carex polygama Schkuhr
    Carex canescens L.*+

        gray bog sedge, silvery sedge
    Carex canescens L. subsp. canescens
        gray bog sedge, silvery sedge
             Carex canescens L. var. canescens
             Carex canescens L. var. dubia auct.
             Carex canescens L. var. robustina Macoun
             Carex canescens L. var. robustior Blytt ex Andersson
             Carex canescens L. var. subloliacea sensu Fernald, non Laest.
             Carex subloliacea (Fernald) E.P.Bicknell
    Carex canescens L. subsp. disjuncta
        gray bog sedge, silvery sedge
             Carex canescens L. var. disjuncta Fernald
             Carex disjuncta (Fernald) E.P.Bicknell
    Carex capillaris L.*+

        hair-like sedge
             Carex capillaris L. subsp. chlorostachys
             Carex capillaris L. var. elongata Olney ex Fernald
             Carex capillaris L. var. major Blytt
             Carex chlorostachys Stev.
             Carex fuscidula V.I.Krecz. ex T.V.Egorova
    Carex careyana Torr. ex Dewey*+

        Carey's sedge, Carey's wood sedge
    Carex castanea Wahlenb.*+

        chestnut sedge, chestnut woodland sedge
             Carex fexilis Rudge
    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 chordorrhiza Ehrh. ex L.f.*+

        cord-root sedge, creeping sedge
    Carex communis L.H.Bailey
        Colonial oak sedge, fibrous-root sedge
    Carex comosa Boott*+

        bristly sedge
    Carex comosa Boott X C. hystericina Muhl. ex Willd.+

        
    Carex communis L.H.Bailey var. communis *+

        Colonial oak sedge, fibrous-root sedge
    Carex concinna R.Br.*+

        beautiful sedge, low northern sedge
    Carex conjuncta Boott
        soft fox sedge
    Carex conoidea Willd.*+

        open-field sedge, prairie gray sedge
             Carex katahdinensis Fernald
    Carex crawei Dewey*+

        Crawe's sedge, early fen sedge
    Carex crawfordii Fernald*+

        Crawford's oval sedge, Crawford's sedge
             Carex crawfordii Fernald var. vigens Fernald
    Carex crinita Lam.
        fringed sedge
    Carex cristatella Britton*+

        crested oval sedge, crested sedge
             Carex cristatella Britton f. catelliformis (Farw.) Fernald
             Carex cristata Schwein.
    Carex crinita Lam. var. crinita *+

        fringed sedge
             Carex crinita Lam. var. minor Boott
             Carex crinita Lam. var. morbida J.Carey
             Carex leonura Wahlenb.
    Carex crus-corvi Shuttlew. ex Kunze*+

        crow-foot fox sedge, crow-spur sedge, raven's-foot sedge
             Carex bayardii Fernald
             Carex crus-corvi Shuttlew. ex Kunze var. virginiana Fernald
    Carex cryptolepis Mack.*+

        northeastern sedge, small yellow sedge
             Carex flava L. var. fertilis auct. non Peck
    Carex cumulata (L.H.Bailey) Mack.*+

        clustered sedge, crowded oval sedge
             Carex straminea Willd. ex Schkuhr var. cumulata L.H.Bailey
    Carex davisii Schwein. & Torr.*+

        awned graceful sedge, Davis' sedge
    Carex debilis Michx.
        weak sedge, white-edge sedge
    Carex debilis Michx. var. rudgei L.H.Bailey*+

        northern weak sedge, weak sedge, white-edge sedge
             Carex allegheniensis Mack.
             Carex debilis Michx. var. intercursa Fernald
             Carex debilis Michx. var. interjecta L.H.Bailey
             Carex debilis Michx. var. puberua A.Gray
             Carex debilis Michx. var. strictior L.H.Bailey
             Carex flexuosa Muhl. ex Willd.
             Carex tenuis Rudge
    Carex deflexa Hornem.
        northern oak sedge, northern sedge
    Carex deflexa Hornem. var. deflexa *+

        northern oak sedge, northern sedge
             Carex deflexa Hornem. var. deanei L.H.Bailey
    Carex deweyana Schwein.
        Dewey's sedge
    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.
        narrow-leaved wood sedge, slender woodland 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 echinata Murray
        large-fruited star sedge, prickly sedge, star sedge
    Carex echinodes (Fernald) P.Rothr., Reznicek & Hipp.*+

        marsh straw sedge, quill sedge
             Carex straminea Willd. ex Schkuhr var. echinodes Fernald
             Carex tenera Dewey var. echinodes (Fernald) Wiegand
    Carex echinata Murray subsp. echinata*+

        large-fruited star sedge, prickly sedge, star sedge
             Carex angustior Mack.
             Carex angustior Mack. var. gracilenta R.T.Clausen & Wahl
             Carex cephalantha (L.H.Bailey) E.P.Bicknell
             Carex echinata Murray var. angustata (J.Carey) L.H.Bailey
             Carex echinata Murray var. echinata
             Carex hawaiiensis H.St.John
             Carex josselynii (Fernald) Mack. ex Pease
             Carex leersii Willd.
             Carex muricata L. var. angustata (J.Carey) J.Carey ex Gleason
             Carex muricata L. var. cephalantha (L.H.Bailey) Wiegand & Eames
             Carex ormantha (Fernald) Mack.
             Carex phyllomanica W.Boott var. angustata (J.Carey) B.Boivin
             Carex phyllomanica W.Boott var. ormantha (Fernald) B.Boivin
             Carex svensonis Skottsb.
    Carex emoryi Dewey ex Torr.+

        Emory's sedge
             Carex millegrana T.Holm
             Carex stricta Lam. var. elongata (Boeck.) Gleason
             Carex stricta Lam. var. emoryi (Dewey) L.H.Bailey
             Caex variabilis L.H.Bailey var. elatior L.H.Bailey
             Caex virginiana Woods var. elongata Boeck.
    Carex exilis Dewey*+

        coast sedge, coastal sedge, coastal star sedge
             Carex exilis Dewey var. squamacea
    Carex festucacea Schkuhr ex Willd.*+

        fescue oval sedge, fescue sedge
    Carex festucacea Schkuhr ex Willd. X C. tenera Dewey+

        
    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 foenea Willd.*+

        bronze-headed oval sedge
             Carex aenea Fernald
             Carex foenea Willd. var. foenea
    Carex folliculata L.*+

        long sedge, northern long sedge
    Carex formosa Dewey*+

        awnless graceful sedge, handsome sedge
    Carex garberi Fernald*+

        elk sedge, false golden sedge
             Carex garberi Fernald subsp. bifaria
             Carex garberi Fernald var. bifaria Fernald
    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 grayi J.Carey*+

        bur sedge, Gray's bur sedge, Gray's sedge
             Carex asa-grayi L.H.Bailey
             Carex grayi J.Carey var. hispidula A.Gray
             Carex intumescens Rudge var. globularis A.Gray
    Carex grisea Wahlenb.*+

        eastern narrow-leaved sedge, gray sedge
             Carex amphibola auct. mult.
             Carex amphibola Steud. var. turgida Fernald
    Carex gynandra Schwein.*+

        nodding sedge
             Carex crinita Lam. var. gynandra (Schwein.) Schwein. & Torr.
             Carex crinita Lam. var. simulans Fernald
             Carex gynandra Schwein. var. simulans (Fernald) Roll.-Germ.
    Carex gynocrates Wormsk. ex Drejer*+

        northern bog sedge
             Carex dioica L. subsp. gynocrates
             Carex dioica L. var. gynocrates (Wormsk. ex Drejer) Ostenf.
             Carex parallela auct. non (Laest.) Sommerf.
    Carex haydenii Dewey*+

        Hayden's sedge, long-scaled tussock sedge
             Carex acuta L. var. erecta Dewey
             Carex rousseaui Raymond
             Carex stricta Lam. var. decora L.H.Bailey
             Carex stricta Lam. var. haydenii (Dewey) Kük.
    Carex hirtifolia Mack.*+

        hairy sedge, hairy wood sedge, pubescent sedge
    Carex hirta L.*+

        hammer sedge, sharp-toothed woolly sedge
    Carex hirsutella Mack.
        fuzzy wuzzy sedge
             Carex complanata Torr. & Hook. var. hirsuta (L.H.Bailey) Gleason
    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 inops L.H.Bailey
        long-stolon sedge
    Carex inops L.H.Bailey subsp. heliophila*+

        long-stolon sedge, round-bodied oak sedge, sun sedge
             Carex erxlebeniana Kelso
             Carex heliophila Mack.
             Carex pensylvanica Lam. subsp. heliophila
             Carex pensylvanica Lam. var. digyna Boeck.
    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 jamesii Schwein.*+

        grass sedge, James' sedge
             Carex steudelii Kunth
    Carex lacustris Willd.*+

        common lake sedge, rip-gut sedge
             Carex riparia M.A.Curtis var. lacustris (Willd.) Kük.
    Carex laeviconica Dewey*+

        long-toothed lake sedge, smooth-cone sedge
    Carex laevivaginata (Kük.) Mack.*+

        smooth-sheathed fox sedge, smooth-sheathed sedge
             Carex stipata Muhl. ex Willd. var. laevivaginata Kük.
    Carex laeviconica Dewey X C. trichocarpa Willd.+

        
    Carex lapponica O.Lang
        Lapland sedge
    Carex lasiocarpa Ehrh.
        narrow-leaved woolly sedge, woolly-fruit sedge
    Carex lasiocarpa Ehrh. subsp. americana*+

        American woolly-fruit sedge, narrow-leaved woolly sedge, woolly-fruit sedge
             Carex filiformis auct. non L.
             Carex lanuginosa Michx. var. americana (Fernald) B.Boivin
             Carex lasiocarpa Ehrh. var. americana Fernald
    Carex laxiculmis Schwein.*+

        spreading sedge, weak-stemmed wood sedge
    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 laxiculmis Schwein. var. copulata (L.H.Bailey) Fernald+

        spreading sedge, weak-stemmed wood sedge
             Carex digitalis Willd. var. copulata L.H.Bailey
             Carex X copulata (L.H.Bailey) Mack. X
    Carex laxiculmis Schwein. var. laxiculmis +

        spreading sedge, weak-stemmed wood sedge
    Carex leavenworthii Dewey*+

        Leavenworth's bracted sedge, Leavenworth's sedge
             Carex cephalophora Muhl. ex Willd. var. angustifolia Boott
             Carex cephalophora Muhl. ex Willd. var. leavenworthii (Dewey) Kük.
    Carex lenticularis Michx.
        lenticular sedge, shore sedge, tufted sedge
    Carex lenticularis Michx. var. lenticularis *+

        lakeshore sedge, lenticular sedge, shore sedge, tufted sedge
             Carex lenticularis Michx. var. albimontana Dewey
             Carex lenticularis Michx. var. eucycla Fernald & Wiegand
             Carex lenticularis Michx. var. merens Howe
    Carex leptalea Wahlenb.
        bristle-stalked sedge, slender sedge
    Carex leptonervia (Fernald) Fernald*+

        few-nerved wood sedge, nerveless woodland sedge
             Carex laxiflora Lam. var. leptonervia Fernald
             Carex laxiflora Lam. var. varians L.H.Bailey
    Carex leptalea Wahlenb. subsp. leptalea*+

        bristle-stalked sedge, slender sedge
    Carex limosa L.*+

        muck sedge, mud sedge
             Carex limosa L. var. irrigua Wahlenb.
    Carex livida (Wahlenb.) Willd.*+

        livid sedge, pale stiff sedge
             Carex livida (Wahlenb.) Willd. var. grayana (Dewey) Fernald
             Carex livida (Wahlenb.) Willd. var. radicaulis Paine
    Carex longii Mack.*+

        greenish-white sedge, Long's sedge
    Carex lucorum Willd. ex Link
        Blue Ridge sedge, long-beaked oak sedge
    Carex lucorum Willd. ex Link var. lucorum *+

        Blue Ridge sedge, long-beaked oak sedge
             Carex michiganensis Dewey
             Carex pensylvanica Lam. var. distans Peck
             Carex pensylvanica Lam. var. lucorum (Willd. ex Link) Fernald
             Carex pensylvanica Lam. var. separans Peck
    Carex lupuliformis Sartwell ex Dewey*+

        false hop sedge, hop-like sedge, knobbed hop sedge
    Carex lupulina Willd.*+

        common hop sedge, hop sedge
             Carex lupulina Willd. var. pedunculata A.Gray
             Carex X macounii Dewey X
    Carex lurida Wahlenb.*+

        shallow sedge
    Carex magellanica Lam.+

        boreal bog 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 magellanica Lam. subsp. magellanica+

        boreal bog sedge
    Carex meadii Dewey*+

        Mead's sedge, Mead's stiff sedge
             Carex tetanica Schkuhr var. meadii (Dewey) L.H.Bailey
    Carex media R.Br. ex Richardson*+

        intermediate sedge
             Carex alpina Lijl. var. inferalpina Wahlenb.
             Carex angarae Steud.
             Carex norvegica Retz. subsp. inferalpina
             Carex norvegica Retz. var. inferalpina (Wahlenb.) B.Boivin
             Carex vahlii Schkuhr var. inferalpina Wahlenb.
    Carex merritt-fernaldii Mack.*+

        Fernald's oval sedge, Fernald's sedge
             Carex brevior (Dewey) Mack. var. pseudofestucacea Farw.
    Carex michauxiana Boeck.*+

        Michaux's sedge
             Carex abacta L.H.Bailey
             Carex rostrata Michx., 1803, non Stokes, 1787
    Carex molesta Mack. ex Bright*+

        field oval sedge, troublesome sedge
    Carex muhlenbergii Schkuhr ex Willd.*+

        Muhlenberg's bracted sedge, Muhlenberg's sedge, sand bracted sedge, sand sedge
    Carex muhlenbergii Schkuhr ex Willd. var. enervis Boott+

        Muhlenberg's bracted sedge, Muhlenberg's sedge, sand bracted sedge, sand sedge
             Carex onusta Mack.
             Carex plana Mack.
    Carex muhlenbergii Schkuhr ex Willd. var. muhlenbergii +

        Muhlenberg's bracted sedge, Muhlenberg's sedge, sand bracted sedge, sand sedge
    Carex muskingumensis Schwein.*+

        Muskingum sedge, swamp oval sedge
    Carex nebrascensis Dewey*+

        Nebraska sedge
             Carex jamesii Torrey, 1836 non Schwein. 1824
             Carex nebrascensis Dewey var. eruciformis Suksd.
             Carex nebrascensis Dewey var. praevia L.H.Bailey
             Carex nebrascensis Dewey var. ultiformis L.H.Bailey
    Carex nigromarginata Schwein.
        black-edge sedge
    Carex nigra (L.) Reichard*+

        smooth black sedge
             Carex acuta auct. non L.
             Carex acuta L. var. nigra L.
             Carex goodenowii J.Gay
             Carex nigra (L.) Reichard var. strictiformis (L.H.Bailey) Fernald
             Carex vulgaris Fr. var. striciformis L.H.Bailey
             Carex X aquanigra B.Boivin X
    Carex normalis Mack.*+

        greater straw sedge, intermediate sedge, spreading oval sedge
             Carex mirabilis Dewey
    Carex novae-angliae Schwein.*+

        New England oak sedge, New England sedge
    Carex oligocarpa Willd.*+

        few-fruited gray sedge, rich-woods sedge
    Carex oligosperma Michx.*+

        few-seeded hop sedge, few-seeded sedge
    Carex ormostachya Wiegand*+

        necklace-spike sedge, necklace-spike wood sedge
             Carex laxiflora Lam. var. ormostachya (Wiegand) Gleason
    Carex ovalis Gooden.*+

        oval sedge
             Carex leporina L., misapplied
             Carex tracyi Mack.
    Carex pallescens L.*+

        pale green sedge, pale sedge
             Carex pallescens L. var. neogaea Fernald
    Carex pauciflora Lightf.*+

        few-flowered bog sedge, few-flowered sedge, star sedge
    Carex peckii Howe*+

        Peck's oak sedge, Peck's sedge
             Carex albicans auct. non Willd.
             Carex clivicola Fernald & Weath.
             Carex nigromarginata Schwein. var. elliptica (Boott) Gleason
             Carex nigromarginata Schwein. var. minor (Boott) Gleason
    Carex pedunculata Muhl. ex Willd.*+

        long-stalk sedge
    Carex 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 platyphylla J.Carey*+

        broad-leaf sedge, broad-leaved sedge, broad-leaved wood sedge, thicket sedge
    Carex praegracilis W.Boott*+

        clustered field sedge, freeway sedge
             Carex camporum Mack.
    Carex prairea Dewey*+

        fen panicled sedge, prairie sedge
             Carex diandra Schrank var. ramosa (Boott) Fernald
    Carex prasina Wahlenb.*+

        drooping sedge, leek-green sedge
    Carex projecta Mack.*+

        loose-headed oval sedge, necklace sedge
    Carex pseudocyperus L.*+

        cypress-like sedge, false bristly sedge
    Carex radiata (Wahlenb.) Small*+

        eastern star sedge, straight-styled wood sedge
             Carex rosea Schkuhr ex Willd., misapplied
             Carex rosea Schkuhr ex Willd. var. radiata (Wahlenb.) Dewey
             Carex stellulata Gooden. var. radiata Wahlenb.
    Carex retrorsa Schwein.*+

        deflexed bottlebrush sedge, knot-sheath sedge, retrorse sedge
    Carex 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 rostrata Stokes*+

        beaked sedge, northern yellow lake sedge
             Carex rostrata Stokes var. ambigens Fernald
             Carex rostrata Stokes var. rostrata
    Carex sartwellii Dewey*+

        running marsh sedge, Sartwell's sedge
    Carex scabrata Schwein.*+

        eastern rough sedge
    Carex schweinitzii Dewey ex Schwein.*+

        rough sand sedge, Schweinitz's sedge
    Carex scoparia Schkuhr ex Willd.
        broom sedge, lance-fruited oval sedge
             Carex scoparia Schkuhr ex Willd. f. condensa (Fernald) Kük.
             Carex scoparia Schkuhr ex Willd. f. moniliformis (Tuck.) Kük.
             Carex scoparia Schkuhr ex Willd. var. condensa Fernald
             Carex scoparia Schkuhr ex Willd. var. moniliformis Tuck.
             Carex tribuloides Wahlenb. var. moniliformis (Tuck.) Britton
    Carex scoparia Schkuhr ex Willd. var. scoparia *+

        broom sedge, lance-fruited oval sedge
    Carex cf. scoparia Schkuhr ex Willd. X C. tribuloides Wahlenb.+

        
    Carex seorsa Howe
        weak stellate sedge
    Carex shortiana Dewey
        Short's sedge
    Carex siccata Dewey*+

        dry-spiked sedge, hay sedge, hillside sedge, running savanna sedge
             Carex foenea Willd., misapplied
    Carex sparganioides Muhl. ex Willd.*+

        bur-reed sedge, loose-headed bracted sedge
             Carex sparganioides Muhl. ex Willd. var. sparganioides
    Carex spicata Huds.*+

        spiked bracted sedge
    Carex sprengelii Dewey ex Spreng.*+

        long-beaked sedge, Sprengel's sedge
             Carex longirostris Torr., non Krock.
    Carex squarrosa L.
        squarrose sedge
    Carex sterilis Willd.*+

        dioecious sedge, fen star sedge
             Carex elachycarpa Fernald
             Carex muricata L. var. sterilis (Willd.) Gleason
             Carex X minganinsularum Raymond X
             Kobresia elachycarpa (Fernald) Fernald
    Carex stipata Muhl. ex Willd.
        common fox sedge, owl-fruit sedge
    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 straminea Willd. ex Schkuhr*+

        awned oval sedge, eastern straw sedge, straw sedge
             Carex richii (Fernald) Mack.
             Carex straminea Willd. ex Schkuhr var. straminea
    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 suberecta (Olney) Britton*+

        prairie straw sedge, wedge-fruited oval sedge
             Carex tenera Dewey var. suberecta Olney
    Carex swanii (Fernald) Mack.*+

        downy green sedge, Swan's sedge
             Carex virescens Muhl. ex Willd. var. swanii Fernald
    Carex sychnocephala J.Carey*+

        many-headed oval sedge, many-headed sedge
    Carex tenuiflora Wahlenb.*+

        small-headed bog sedge, sparse-flowered sedge
    Carex tenera Dewey*+

        marsh straw sedge, narrow-leaved oval sedge, quill sedge
             Carex straminea Willd. ex Schkuhr var. tenera (Dewey) Barratt
             Carex tenera Dewey var. tenera
    Carex tetanica Schkuhr*+

        common stiff sedge, rigid sedge
    Carex tincta (Fernald) Fernald*+

        tinged oval sedge, tinged sedge
             Carex mirabilis Dewey var. tincta Fernald
    Carex tonsa (Fernald) E.P.Bicknell*+

        shaved sedge
    Carex tonsa (Fernald) E.P.Bicknell var. rugosperma (Mack.) Crins+

        parachute sedge, wrinkled-seeded oak sedge
             Carex rugosperma Mack.
             Carex rugosperma Mack. var. rugosperma
             Carex umbellata sensu Fernald, non Schkuhr ex Willd.
    Carex tonsa (Fernald) E.P.Bicknell var. tonsa +

        shaved sedge, smooth-fruited oak sedge
             Carex rugosperma Mack. var. tonsa (Fernald) E.G.Voss
             Carex umbellata Schkuhr ex Willd. var. tonsa Fernald
    Carex torreyi Tuck.*+

        red-sheathed green sedge, Torrey's sedge
             Carex abbreviata J.D.Prescott
    Carex tribuloides Wahlenb.
        awl-fruited oval sedge, blunt-broom sedge
    Carex trichocarpa Willd.*+

        hairy-fruit lake sedge, hairy-fruit sedge
    Carex trisperma Dewey*+

        three-fruited sedge, three-seeded bog sedge, three-seeded sedge
             Carex trisperma Dewey var. billingsii O.W.Knight
             Carex trisperma Dewey var. trisperma
    Carex tribuloides Wahlenb. var. tribuloides *+

        awl-fruited oval sedge, blunt-broom sedge
    Carex tuckermanii Dewey*+

        bent-seeded hop sedge, Tuckerman's sedge
    Carex typhina Michx.*+

        cat-tail sedge
             Carex squarrosa L. var. typhina (Michx.) Nutt.
             Carex typhinoides Schwein.
    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 vaginata Tauscher*+

        sheathed sedge
             Carex saltuensis L.H.Bailey
    Carex vesicaria L.*+

        blister sedge, tufted lake sedge
             Carex monile Tuck.
             Carex vesicaria L. var. distenta Fr.
             Carex vesicaria L. var. jejuna Fernald
             Carex vesicaria L. var. monile (Tuck.) Fernald
             Carex vesicaria L. var. vesicaria
    Carex viridula Michx.
        green yellow sedge, little green sedge
             Carex oederi Retz. var. pumila (Coss. & Germ.) Fernald
    Carex viridula Michx. subsp. viridula*+

        green yellow sedge, little green sedge
             Carex chlorocarpa Mack.
             Carex irregularis Schwein.
             Carex oederi Ehrh., non Retz.
             Carex oederi Retz. subsp. viridula
             Carex oederi Retz. var. recterostrata (Vict.) Dorn
             Carex oederi Retz. var. viridula (Michx.) Kük.
             Carex pulchella (Lönn.) Lindm.
             Carex scandinavica E.W.Davies
             Carex serotina Mérat
             Carex subglobosa Miel.
             Carex viridula Michx. var. pumila (Coss. & Germ.) Fernald
    Carex vulpinoidea Michx.*+

        brown fox sedge, fox sedge
             Carex microsperma Wahlenb.
             Carex multiflora Willd.
             Carex multiflora Willd. var. microsperma (Wahlenb.) Dewey
             Carex scabior Dewey
             Carex setacea Dewey
             Carex vulpinoidea Michx. var. microsperma (Wahlenb.) Dewey
             Carex vulpinoidea Michx. var. pycnocephala F.J.Herm.
             Carex vulpinoidea Michx. var. scabrior (Dewey) A.W.Wood
             Carex vulpinoidea Michx. var. segregata Farw.
             Carex vulpinoidea Michx. var. setacea (Dewey) Kük.
    Carex woodii Dewey*+

        pretty sedge, Wood's stiff sedge
             Carex colorata Mack.
             Carex tetanica Schkuhr var. woodii (Dewey) A.W.Wood
    Carex X knieskernii Dewey (pro sp.) X +

        
    Carex X laricina Mack. ex Bright (pro sp.) X +

        
             Carex laricina Mack. ex Bright
             Carex muricata L. var. laricina (Mack. ex Bright) Gleason

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