| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CAMO7 | Carex montereyensis Mackenzie | Carex harfordii | Cyperaceae
|
| CAMO12 | Carex montis-eeka Hbd. | Molokai sedge | Cyperaceae
|
| CAMO22 | Carex morrisseyi Porsild | Carex adelostoma | Cyperaceae
|
| CAMUA | Carex muehlenbergii Schkuhr ex Willd. var. australis Olney ex Bailey | Carex austrina | Cyperaceae
|
| CAMUA4 | Carex muehlenbergii Schkuhr ex Willd. var. austrina Small | Carex austrina | Cyperaceae
|
| CAMUE | Carex muehlenbergii Schkuhr ex Willd. var. enervis Boott | Muhlenberg's sedge | Cyperaceae
|
| CAMUM | Carex muehlenbergii Schkuhr ex Willd. var. muehlenbergii | Muhlenberg's sedge | Cyperaceae
|
| CAMU4 | Carex muehlenbergii Schkuhr ex Willd. | Muhlenberg's sedge | Cyperaceae
|
| CAMU5 | Carex multicaulis Bailey | manystem sedge | Cyperaceae
|
| CAMU6 | Carex multicostata Mackenzie | manyrib sedge | Cyperaceae
|
| CAMU19 | Carex multimoda Bailey | Carex pachystachya | Cyperaceae
|
| CAMUA3 | Carex muricata L. var. angustata (Carey) Carey ex Gleason | Carex echinata ssp. echinata | Cyperaceae
|
| CAMUC2 | Carex muricata L. var. cephalantha (Bailey) Wieg. & Eames | Carex echinata ssp. echinata | Cyperaceae
|
| CAMUL | Carex muricata L. var. laricina (Mackenzie ex Bright) Gleason | Carex echinata ssp. echinata | Cyperaceae
|
| CAMUR2 | Carex muricata L. var. ruthii (Mackenzie) Gleason | Carex ruthii | Cyperaceae
|
| CAMUS | Carex muricata L. var. sterilis (Willd.) Gleason | Carex sterilis | Cyperaceae
|
| CAMU7 | Carex muricata L. | rough sedge | Cyperaceae
|
| CAMU8 | Carex muriculata F.J. Herm. | Schiede's sedge | Cyperaceae
|
| CAMU9 | Carex muskingumensis Schwein. | Muskingum sedge | Cyperaceae
|
| CANAH2 | Carex nardina Fries ssp. hepburnii (Boott) A.& D. L�ve & Kapoor | Carex nardina var. hepburnii | Cyperaceae
|
| CANAH | Carex nardina Fries var. hepburnii (Boott) K�kenth. | Hepburn's sedge | Cyperaceae
|
| CANA2 | Carex nardina Fries | spike sedge | Cyperaceae
|
| CANE9 | Carex nealiae R.W. Krauss | Carex thunbergii | Cyperaceae
|
| CANE19 | Carex �nearctica Raymond | Carex limula | Cyperaceae
|
| CANE2 | Carex nebrascensis Dewey | Nebraska sedge | Cyperaceae
|
| CANE3 | Carex nelsonii Mackenzie | Nelson's sedge | Cyperaceae
|
| CANE20 | Carex neomexicana Mackenzie | Carex occidentalis | Cyperaceae
|
| CANE5 | Carex nervina Bailey | Sierra sedge | Cyperaceae
|
| CANE4 | Carex nesophila Holm | Carex microchaeta ssp. nesophila | Cyperaceae
|
| CANE10 | Carex neurochlaena Holm | Carex heleonastes ssp. neurochlaena | Cyperaceae
|
| CANE6 | Carex neurophora Mackenzie | alpine nerve sedge | Cyperaceae
|
| CANEF | Carex nevadensis Boiss. & Reut. ssp. flavella (Krecz.) Janchen | Carex flava | Cyperaceae
|
| CANI10 | Carex nigella Boott | Carex spectabilis | Cyperaceae
|
| CANIS | Carex nigra (L.) Reichard var. strictiformis (Bailey) Fern. | Carex nigra | Cyperaceae
|
| CANI5 | Carex nigra (L.) Reichard | smooth black sedge | Cyperaceae
|
| CANI2 | Carex nigricans C.A. Mey. | black alpine sedge | Cyperaceae
|
| CANIE2 | Carex nigromarginata Schwein. var. elliptica (Boott) Gleason | Carex peckii | Cyperaceae
|
| CANIF | Carex nigromarginata Schwein. var. floridana (Schwein.) K�kenth. | Carex floridana | Cyperaceae
|
| CANIM3 | Carex nigromarginata Schwein. var. minor (Boott) Gleason | Carex peckii | Cyperaceae
|
| CANIM2 | Carex nigromarginata Schwein. var. muehlenbergii (Gray) Gleason | Carex albicans var. albicans | Cyperaceae
|
| CANI3 | Carex nigromarginata Schwein. | black edge sedge | Cyperaceae
|
| CANO | Carex normalis Mackenzie | greater straw sedge | Cyperaceae
|
| CANOI | Carex norvegica Retz. ssp. inferalpina (Wahlenb.) Hult�n | closedhead sedge | Cyperaceae
|
| CANOS | Carex norvegica Retz. ssp. stevenii (Holm) E. Murr. | Steven's sedge | Cyperaceae
|
| CANOI3 | Carex norvegica Retz. var. inferalpina (Wahlenb.) Boivin | Carex norvegica ssp. inferalpina | Cyperaceae
|
| CANOS2 | Carex norvegica Retz. var. stevenii (Holm) Dorn | Carex norvegica ssp. stevenii | Cyperaceae
|
| CANO2 | Carex norvegica Retz. | Norway sedge | Cyperaceae
|
| CANOP | Carex nova Bailey var. pelocarpa (F.J. Herm.) Dorn | Carex pelocarpa | Cyperaceae
|
| CANO3 | Carex nova Bailey | black sedge | Cyperaceae
|
| CANO4 | Carex novae-angliae Schwein. | New England sedge | Cyperaceae
|
| CANU14 | Carex nubicola Mackenzie | Carex haydeniana | Cyperaceae
|
| CANU5 | Carex nudata W. Boott | naked sedge | Cyperaceae
|
| CANU15 | Carex nutans Host | Carex melanostachya | Cyperaceae
|
| CAOB2 | Carex obispoensis Stacey | San Luis Obispo sedge | Cyperaceae
|
| CAOB8 | Carex oblita Steud. | Carex venusta var. minor | Cyperaceae
|
| CAOB3 | Carex obnupta Bailey | slough sedge | Cyperaceae
|
| CAOB7 | Carex obovoidea Cronq. | Carex cusickii | Cyperaceae
|
| CAOB4 | Carex obtusata Lilj. | obtuse sedge | Cyperaceae
|
| CAOC2 | Carex occidentalis Bailey | western sedge | Cyperaceae
|
| CAOEV | Carex oederi Retz. ssp. viridula (Michx.) Hult�n | Carex viridula ssp. viridula | Cyperaceae
|
| CAOER | Carex oederi Retz. var. recterostrata (Victorin) Dorn | Carex viridula ssp. viridula | Cyperaceae
|
| CAOE | Carex oederi auct. non Retz. | Carex viridula ssp. viridula | Cyperaceae
|
| CAOK | Carex oklahomensis Mackenzie | Oklahoma sedge | Cyperaceae
|
| CAOL2 | Carex oligocarpa Schkuhr ex Willd. | richwoods sedge | Cyperaceae
|
| CAOL3 | Carex oligosperma Michx. | fewseed sedge | Cyperaceae
|
| CAOL4 | Carex �olneyi Boott | | Cyperaceae
|
| CAON | Carex �oneillii Lepage | | Cyperaceae
|
| CAON2 | Carex onusta Mackenzie | storm sedge | Cyperaceae
|
| CAOR13 | Carex oregonensis Olney ex Bailey | Carex halliana | Cyperaceae
|
| CAOR | Carex oreocharis Holm | grassyslope sedge | Cyperaceae
|
| CAOR2 | Carex ormantha (Fern.) Mackenzie | Carex echinata ssp. echinata | Cyperaceae
|
| CAOR5 | Carex ormostachya Wieg. | necklace spike sedge | Cyperaceae
|
| CAOR6 | Carex oronensis Fern. | Orono sedge | Cyperaceae
|
| CAOU | Carex ouachitana Kral, Manhart & Bryson | Ouachita Mountain sedge | Cyperaceae
|
| CAOV8 | Carex ovalis Goodenough | eggbract sedge | Cyperaceae
|
| CAOX4 | Carex oxycarpa Holm | Carex angustata | Cyperaceae
|
| CAOXO | Carex oxylepis Torr. & Hook. var. oxylepis | sharpscale sedge | Cyperaceae
|
| CAOXP | Carex oxylepis Torr. & Hook. var. pubescens J.K. Underwood | sharpscale sedge | Cyperaceae
|
| CAOX | Carex oxylepis Torr. & Hook. | sharpscale sedge | Cyperaceae
|
| CAOZ2 | Carex ozarkana P. Rothr. & Reznicek | Ozark sedge | Cyperaceae
|
| CAPA58 | Carex pachycarpa Mackenzie | Carex multicostata | Cyperaceae
|
| CAPAG | Carex pachystachya Cham. ex Steud. var. gracilis (Olney) Mackenzie | Carex pachystachya | Cyperaceae
|
| CAPAM2 | Carex pachystachya Cham. ex Steud. var. monds-coulteri L. Kelso | Carex pachystachya | Cyperaceae
|
| CAPA14 | Carex pachystachya Cham. ex Steud. | chamisso sedge | Cyperaceae
|
| CAPA15 | Carex pairaei F.W. Schultz | Carex muricata | Cyperaceae
|
| CAPAT | Carex paleacea Schreb. ex Wahlenb. var. transatlantica Fern. | Carex paleacea | Cyperaceae
|
| CAPA29 | Carex paleacea Schreb. ex Wahlenb. | chaffy sedge | Cyperaceae
|
| CAPAN2 | Carex pallescens L. var. neogaea Fern. | Carex pallescens | Cyperaceae
|
| CAPA17 | Carex pallescens L. | pale sedge | Cyperaceae
|
| CAPA49 | Carex �paludivagans Drury (pro sp.) | | Cyperaceae
|
| CAPA55 | Carex panda C.B. Clarke | Carex aquatilis var. dives | Cyperaceae
|
| CAPAM3 | Carex panicea L. var. microcarpa Sonder | Carex panicea | Cyperaceae
|
| CAPA30 | Carex panicea L. | grasslike sedge | Cyperaceae
|
| CAPA16 | Carex pansa Bailey | sanddune sedge | Cyperaceae
|
| CAPA57 | Carex parallela auct. non (Laestad.) Sommerf. | Carex gynocrates | Cyperaceae
|
| CAPAH3 | Carex parryana Dewey ssp. hallii (Olney) D.F. Murr. | Carex hallii | Cyperaceae
|
| CAPAI3 | Carex parryana Dewey ssp. idahoa (Bailey) D.F. Murr. | Carex idahoa | Cyperaceae
|
| CAPAB | Carex parryana Dewey var. brevisquama F.J. Herm. | Parry's sedge | Cyperaceae
|
| CAPAH4 | Carex parryana Dewey var. hallii (Olney) K�kenth. | Carex hallii | Cyperaceae
|
| CAPAP3 | Carex parryana Dewey var. parryana | Parry's sedge | Cyperaceae
|
| CAPAU | Carex parryana Dewey var. unica Bailey | Carex hallii | Cyperaceae
|