Ample-leaved Sedge, Big-leaf Sedge: Carex amplifolia
Many-fruit Sedge, Wide-fruited Sedge: Carex angustata (Synonyms: Carex egregia, Carex eurycarpa, Carex oxycarpa)
Columbia Sedge: Carex aperta (Synonym: Carex accedens) -
Water Sedge: Carex aquatilis var. aquatilis (Synonyms: Carex acutinella, Carex interimus, Carex pachystoma, Carex substricta, Carex suksdorfii, Carex variabilis) -
Sitka Sedge: Carex aquatilis var. dives (Synonyms: Carex aquatilis var. sitchensis, Carex dives, Carex howellii, Carex panda, Carex sitchensis) -
Clusered Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei) -
Awned Sedge, Wheat Sedge: Carex atherodes -
Slenderbeak Sedge, Slender-beak Sedge, Slender-beaked Sedge: Carex athrostachya (Synonym: Carex atherostachya (misspelled)) -
Bebb's Sedge: Carex bebbii (Synonym: Carex tribuloides var. bebbii)
Bolander's Sede: Carex bolanderi (Synonyms: Carex deweyana, Carex deweyana var. bolanderi)
California Sedge: Carex californica -
Northwestern Sedge, Tetrastigmatic Sedge: Carex concinnoides
Cusick's Sedge: Carex cusickii (Synonyms: Carex obovoidea, Carex teretiuscula var. ampla)
Dense Sedge: Carex densa (Synonyms: Carex breviligulata, Carex brongniartii, Carex chrysoleuca, Carex dugleyi, Carex vicaria. Carex vicaria var. costata, Carex vulpinoidea var. vicaria)
Dewey's Sedge: Carex deweyana -
Short-leaf Sedge, Two-seed Sedge: Carex disperma (Synonym: Carex tenella)
Douglas' Sedge: Carex douglasii -
Star Sedge: Carex echinata ssp. echinata (Synonyms: Carex angustior, Carex muricata, Carex ormantha)
Big Inflated Sedge: Carex exsiccata (Synonym: Carex vesicaria var. major)
Greensheathed Sedge, Green-sheath Sedge: Carex feta (Synonym: Carex straminea var. mixta) -
Threadleaf Sedge, Wool Grass: Carex filifolia var. filifolia (Synonyms: Carex elyniformis, Carex exserta, Carex filifolia, Carex filifolia var. erostrata)
Fragile-sheath Sedge, Fragile Sheathed Sedge, Fragile-sheathed Sedge: Carex fracta -
Elk Sedge, Geyer's Sedge: Carex geyeri -
Hall's Sedge: Carex halliana (Synonym: Carex oregonensis)
False Golden Sedge: Carex hassei (Synonyms: Carex garberi, Carex saliniformis)
Henderson's Sedge, Timber Sedge: Carex hendersonii -
Hood's Sedge: Carex hoodii -
Bottlebrush Sedge, Porcupine Sedge: Carex hystericina
Sheep Sedge, Small-head Sedge, Small-headed Sedge: Carex illota
Weak-veined Sedge: Carex infirminervia (Synonyms: Carex bolanderi ssp. infirminerivia, Carex deweyana) -
Long-rhizome Sedge, Long-stolon Sedge: Carex inops ssp. inops (Synonyms: Carex pensylvanica var. vespertina, Carex verecunda, Carex vespertina)
Inland Sedge: Carex interior (Synonym: Carex scirpoides) -
Greenfruit Sedge, Greenfruited Sedge, Interrupted Sedge: Carex interrupta -
Smoothstem Sedge Smooth-stemmed Sedge: Carex laeviculmis (Synonym: Carex deweyana ssp. sparsiflora)
Kellogg's Sedge, Lakeshore Sedge: Carex lenticularis var. lipocarpa (Synonyms: Carex kelloggii, Carex lenticularis var. lenticularis, Carex lenticularis var. pallida) -
Eggbract Sedge, hare Sedge, Oval Broom Sedge, Oval Sedge: Carex leporina (Synonyms: Carex ovalis, Carex tracyi)
Bristle-stalked Sedge, Bristlystalked Sedge, Delicate Sedge, Jelly Bean Sedge: Carex leptalea (Synonyms: Carex jimcalderi, Carex leptalea ssp. leptalea, Carex leptalea ssp. pacifica, Carex leptalea var. harperi, Carex leptalea var. tayloris)
Dewey's Sedge, Short-scaled Sedge, Slenderfoot Sedge, Taperfruit Shortscale Sedge: Carex leptopoda (Synonyms: Carex deweyana, Carex deweyana ssp. leptopoda, Carex deweyana var. leptopoda)
Mud Sedge: Carex limosa
Spring Sedge, Woodrush Sedge: Carex luzulina (Synonyms: Carex ablata, Carex luzulina var. ablata, Carex luzulina var. luzulina, Carex owyheensis) -
Falkland Island Sedge: Carex macloviana
Alaska Long-awn Sedge, Large-awn Sedge, Long-awn Sedge: Carex macrochaeta -
Merten's Sedge: Carex mertensii (Synonym: Carex columbiana) -
Small-wing Sedge, Small-winged Sedge: Carex microptera (Synonyms: Carex festivella, Carex limnophila)
Nebraska Sedge: Carex nebrascensis (Synonyms: Carex jamesii, Carex nebrascensis var. eruciformis, Carex nebrascensis var. praevia, Carex nebrascensis var. ultriformis, Carex nebraskensis) -
Naked Sedge, Torrent Sedge: Carex nudata (Synonyms: Carex acutina, Carex bishallii, Carex hallii, Carex nudata var. anomala, Carex suborbiculata, Carex tenacissima) -
Slough Sedge: Carex obnupta (Synonym: Carex magnifica) -
Chamisso Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya ssp. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri, Carex platylepis) -
Woolly Sedge: Carex pellita (Synonyms: Carex lanuginosa, Carex lasiocarpa var. latifolia) -
Black Creeper Sedge, Clustered Field Sedge: Carex praegracilis -
Meadow Sedge, Northern Meadow Sedge: Carex praticola (Synonyms: Carex piperi, Carex platylepis, Carex pratensis)
Presl's Sedge: Carex preslii
Knot-sheath Sedge, Retrorse Sedge: Carex retrorsa -
Ross' Sedge: Carex rossii (Synonym: Carex brevipes, Carex deflexa ssp. media, Carex deflexa var. farwellii, Carex deflexa var. rossii, Carex diversistylis, Carex farwellii, Carex novae-angliae var. rossii) -
Pointed Broomsedge, Pointed-broom Sedge: Carex scoparia var. scoparia -
Analogue Sedge, Short-beaked Sedge: Carex simulata
Awl-fruit Sedge, Sawbeak Sedge: Carex stipata var. stipata (Synonyms: Carex stipata var. crassicurta, Carex stipata var. subsecuta) -
Pale Broom Sedge, Rusty Sedge: Carex subfusca (Synonym: Carex teneriformis)
Many-headed Sedge: Carex sychnocephala -
Blunt Broom Sedge, Tribulation Sedge: Carex tribuloides var. tribuloides
Foothill Sedge: Carex tumulicola
Lateral Sedge, One-sided Sedge: Carex unilateralis
Beaked Sedge, Bladder Sedge, Inflated Sedge, Northwest Territory Sedge, Shore Sedge, Southern Beaked Sedge: Carex utriculata (Synonyms: Carex inflata var. utriculata, Carex laevirostris, Carex rhynchophysa, Carex rostrata, Carex rostrata var. utriculata) -
Blister Sedge, Small Inflated Sedge, Inflated Sedge: Carex vesicaria var. vesicaria (Synonyms: Carex inflata, Carex vesicaria) -
Fox Sedge: Carex vulpinoidea (Synonyms: Carex microsperma, Carex multiflora, Carex multiflora var. microsperma, Carex scabrior, Carex setacea, Carex vulpinoidea var. microsperma, Carex vulpinoidea var. pycnocephala, Carex vulpinoidea var. scabrior, Carex vulpinoidea var. segregata, Carex vulpinoidea var. setacea, Carex vulpinoidea var. vulpinoidea) -