| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CAHO7 | Carex hookeriana Dewey | Hooker's sedge | Cyperaceae
|
| CAHO8 | Carex hormathodes Fern. | marsh straw sedge | Cyperaceae
|
| CAHO9 | Carex houghtoniana Torr. ex Dewey | Houghton's sedge | Cyperaceae
|
| CAHO15 | Carex houghtonii Torr. | Carex houghtoniana | Cyperaceae
|
| CAHOC | Carex howei Mackenzie var. capillacea (Bailey) Fern. | Carex atlantica ssp. capillacea | Cyperaceae
|
| CAHO10 | Carex howei Mackenzie | Carex atlantica ssp. capillacea | Cyperaceae
|
| CAHO14 | Carex howellii Bailey | Carex aquatilis var. dives | Cyperaceae
|
| CAHY2 | Carex hyalina Boott | tissue sedge | Cyperaceae
|
| CAHY3 | Carex hyalinolepis Steud. | shoreline sedge | Cyperaceae
|
| CAHY4 | Carex hystericina Muhl. ex Willd. | bottlebrush sedge | Cyperaceae
|
| CAID | Carex idahoa Bailey | Idaho sedge | Cyperaceae
|
| CAIG | Carex ignota Dewey | Carex striatula | Cyperaceae
|
| CAIL | Carex illota Bailey | sheep sedge | Cyperaceae
|
| CAIM3 | Carex impressa (S.H. Wright) Mackenzie | Carex hyalinolepis | Cyperaceae
|
| CAIM2 | Carex impressinervia Bryson, Kral & Manhart | ravine sedge | Cyperaceae
|
| CAIN31 | Carex incomperta Bickn. | Carex atlantica ssp. atlantica | Cyperaceae
|
| CAIN33 | Carex incondita F.J. Herm. | Carex macloviana | Cyperaceae
|
| CAIN35 | Carex incurva Lightf. | Carex maritima | Cyperaceae
|
| CAIND | Carex incurviformis Mackenzie var. danaensis (Stacey) F.J. Herm. | coastal sand sedge | Cyperaceae
|
| CAINI2 | Carex incurviformis Mackenzie var. incurviformis | coastal sand sedge | Cyperaceae
|
| CAIN8 | Carex incurviformis Mackenzie | coastal sand sedge | Cyperaceae
|
| CAINU | Carex inflata Huds. var. utriculata (Boott) Druce | Carex utriculata | Cyperaceae
|
| CAIN37 | Carex inflata Huds. | Carex vesicaria var. vesicaria | Cyperaceae
|
| CAINH2 | Carex inops Bailey ssp. heliophila (Mackenzie) Crins | sun sedge | Cyperaceae
|
| CAINI3 | Carex inops Bailey ssp. inops | long-stolon sedge | Cyperaceae
|
| CAIN9 | Carex inops Bailey | long-stolon sedge | Cyperaceae
|
| CAIN10 | Carex integra Mackenzie | smoothbeak sedge | Cyperaceae
|
| CAINC3 | Carex interior Bailey ssp. charlestonensis Clokey | Carex interior | Cyperaceae
|
| CAINC2 | Carex interior Bailey var. capillacea Bailey | Carex atlantica ssp. capillacea | Cyperaceae
|
| CAINK | Carex interior Bailey var. keweenawensis F.J. Herm. | Carex interior | Cyperaceae
|
| CAIN11 | Carex interior Bailey | inland sedge | Cyperaceae
|
| CAIND2 | Carex interrupta Boeckl. var. distenta K�kenth. | Carex interrupta | Cyperaceae
|
| CAIN17 | Carex interrupta Boeckl. | greenfruit sedge | Cyperaceae
|
| CAINF | Carex intumescens Rudge var. fernaldii Bailey | Carex intumescens | Cyperaceae
|
| CAIN12 | Carex intumescens Rudge | greater bladder sedge | Cyperaceae
|
| CAIN49 | Carex inversa R. Br. | knob sedge | Cyperaceae
|
| CAIN32 | Carex invisa Bailey | Carex spectabilis | Cyperaceae
|
| CAJA | Carex jacobi-peteri Hult�n | Carex pyrenaica ssp. micropoda | Cyperaceae
|
| CAJA2 | Carex jamesii Schwein. | James' sedge | Cyperaceae
|
| CAJE | Carex jepsonii J.T. Howell | Carex whitneyi | Cyperaceae
|
| CAJI | Carex jimcalderi Boivin | Carex leptalea ssp. pacifica | Cyperaceae
|
| CAJO | Carex jonesii Bailey | Jones' sedge | Cyperaceae
|
| CAJO2 | Carex joorii Bailey | cypress swamp sedge | Cyperaceae
|
| CAJO4 | Carex josselynii (Fern.) Mackenzie ex Pease | Carex echinata ssp. echinata | Cyperaceae
|
| CAJU2 | Carex juniperorum Catling, Reznicek & Crins | juniper sedge | Cyperaceae
|
| CAKA | Carex katahdinensis Fern. | Carex conoidea | Cyperaceae
|
| CAKA2 | Carex kauaiensis R.W. Krauss | Kauai sedge | Cyperaceae
|
| CAKE2 | Carex kelloggii W. Boott | Carex lenticularis var. lipocarpa | Cyperaceae
|
| CAKE5 | Carex �kenaica Lepage | | Cyperaceae
|
| CAKN | Carex �knieskernii Dewey (pro sp.) | | Cyperaceae
|
| CAKO2 | Carex kobomugi Ohwi | Japanese sedge | Cyperaceae
|
| CAKO5 | Carex kokrinensis Porsild | Carex eleusinoides | Cyperaceae
|
| CAKRP | Carex krausei Boeckl. ssp. porsildiana (Polunin) A.& D. L�ve & Raymond | Carex krausei | Cyperaceae
|
| CAKR2 | Carex krausei Boeckl. | Krause's sedge | Cyperaceae
|
| CALA10 | Carex lachenalii Schkuhr | twotipped sedge | Cyperaceae
|
| CALAL8 | Carex lacustris Willd. var. laxiflora Dewey | Carex hyalinolepis | Cyperaceae
|
| CALA16 | Carex lacustris Willd. | hairy sedge | Cyperaceae
|
| CALA12 | Carex laeviconica Dewey | smoothcone sedge | Cyperaceae
|
| CALA13 | Carex laeviculmis Meinsh. | smoothstem sedge | Cyperaceae
|
| CALA14 | Carex laevivaginata (K�kenth.) Mackenzie | smoothsheath sedge | Cyperaceae
|
| CALAA3 | Carex lanuginosa Michx. var. americana (Fern.) Boivin | Carex lasiocarpa var. americana | Cyperaceae
|
| CALA30 | Carex lanuginosa auct. non Michx. | Carex pellita | Cyperaceae
|
| CALA15 | Carex lapponica O.F. Lang | Lapland sedge | Cyperaceae
|
| CALA54 | Carex laricina Mackenzie ex Bright | Carex echinata ssp. echinata | Cyperaceae
|
| CALAA5 | Carex lasiocarpa Ehrh. ssp. americana (Fern.) Love & Bernard | Carex lasiocarpa var. americana | Cyperaceae
|
| CALAA | Carex lasiocarpa Ehrh. var. americana Fern. | American woollyfruit sedge | Cyperaceae
|
| CALAL7 | Carex lasiocarpa Ehrh. var. latifolia (Boeckl.) Gilly | Carex pellita | Cyperaceae
|
| CALA11 | Carex lasiocarpa Ehrh. | woollyfruit sedge | Cyperaceae
|
| CALA31 | Carex latebracteata Waterfall | Waterfall's sedge | Cyperaceae
|
| CALA76 | Carex lativena S.D. & G.D. Jones | broadvein sedge | Cyperaceae
|
| CALA17 | Carex laxa Wahlenb. | weak sedge | Cyperaceae
|
| CALAC | Carex laxiculmis Schwein. var. copulata (Bailey) Fern. | spreading sedge | Cyperaceae
|
| CALAL4 | Carex laxiculmis Schwein. var. laxiculmis | spreading sedge | Cyperaceae
|
| CALA18 | Carex laxiculmis Schwein. | spreading sedge | Cyperaceae
|
| CALAA4 | Carex laxiflora Lam. var. angustifolia Dewey | Carex striatula | Cyperaceae
|
| CALAB4 | Carex laxiflora Lam. var. blanda (Dewey) Boott | Carex blanda | Cyperaceae
|
| CALAG3 | Carex laxiflora Lam. var. gracillima (Boott) Boott ex B.L. Robins. & Fern. | Carex gracilescens | Cyperaceae
|
| CALAL9 | Carex laxiflora Lam. var. latifolia Boott | Carex albursina | Cyperaceae
|
| CALAL5 | Carex laxiflora Lam. var. laxiflora | broad looseflower sedge | Cyperaceae
|
| CALAO | Carex laxiflora Lam. var. ormostachya (Wieg.) Gleason | Carex ormostachya | Cyperaceae
|
| CALAP2 | Carex laxiflora Lam. var. patulifolia (Dewey) Carey | Carex laxiflora var. laxiflora | Cyperaceae
|
| CALAP3 | Carex laxiflora Lam. var. purpurifera (Mackenzie) Gleason | Carex purpurifera | Cyperaceae
|
| CALAS | Carex laxiflora Lam. var. serrulata F.J. Herm. | broad looseflower sedge | Cyperaceae
|
| CALAV | Carex laxiflora Lam. var. varians Bailey | Carex leptonervia | Cyperaceae
|
| CALA19 | Carex laxiflora Lam. | broad looseflower sedge | Cyperaceae
|
| CALE6 | Carex leavenworthii Dewey | Leavenworth's sedge | Cyperaceae
|
| CALE33 | Carex leersii Willd. | Carex echinata ssp. echinata | Cyperaceae
|
| CALE37 | Carex leiophylla Mackenzie | Carex sabulosa | Cyperaceae
|
| CALE7 | Carex lemmonii W. Boott | Lemmon's sedge | Cyperaceae
|
| CALEA | Carex lenticularis Michx. var. albimontana Dewey | Carex lenticularis var. lenticularis | Cyperaceae
|
| CALEB | Carex lenticularis Michx. var. blakei Dewey | Carex lenticularis var. lenticularis | Cyperaceae
|
| CALED | Carex lenticularis Michx. var. dolia (M.E. Jones) L.A. Standley | Enander's sedge | Cyperaceae
|
| CALEE | Carex lenticularis Michx. var. eucycla Fern. | Carex lenticularis var. lenticularis | Cyperaceae
|
| CALEI | Carex lenticularis Michx. var. impressa (Bailey) L.A. Standley | lakeshore sedge | Cyperaceae
|
| CALEL | Carex lenticularis Michx. var. lenticularis | lakeshore sedge | Cyperaceae
|
| CALEL2 | Carex lenticularis Michx. var. limnophila (Holm) Cronq. | lakeshore sedge | Cyperaceae
|
| CALEL3 | Carex lenticularis Michx. var. lipocarpa (Holm) L.A. Standley | Kellogg's sedge | Cyperaceae
|
| CALEM | Carex lenticularis Michx. var. merens Howe | Carex lenticularis var. lenticularis | Cyperaceae
|
| CALEP4 | Carex lenticularis Michx. var. pallida (W. Boott) Dorn | Carex lenticularis var. lipocarpa | Cyperaceae
|
| CALE8 | Carex lenticularis Michx. | lakeshore sedge | Cyperaceae
|
| CALE22 | Carex lepidocarpa Tausch | Carex viridula ssp. brachyrrhyncha var. elatior | Cyperaceae
|