Ample-leaved Sedge, Big-leaf Sedge: Carex amplifolia -
Many-fruit Sedge, Widefruit Sedge, Wide-fruited Sedge: Carex angustata (Synonyms: Carex egregia, Carex eurycarpa, Carex oxycarpa) -
Columbia Sedge: Carex aperta (Synonyms: Carex accedens, Carex accutina var. tenuior, Carex aperta var. umbrosa, Carex aperta var. viridans, Carex stylosa var. virens, Carex turgidula) -
Water Sedge: Carex aquatilis var. aquatilis (Synonyms: Carex acutinella, Carex interimus, Carex pachystoma, Carex suksdorfii, Carex variabilis) -
Sitka Sedge: Carex aquatilis var. dives (Synonyms: Carex dives, Carex howellii, Carex panda, Carex sitchensis) -
Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei) -
Slender-beak Sedge, Long-bract Sedge: Carex athrostachya -
Golden Sedge, Pumpkin Sedge: Carex aurea -
Plains Oval Sedge, Short-beaked Sedge: Carex brevior (Synonyms: Carex festucacea var. brevior, Carex straminea var. brevior) -
Brewer's Sedge: Carex breweri (Synonyms: Carex breweri var. breweri, Carex engelmannii) -
Brown Sedge, Brownish Sedge: Carex brunnescens ssp. brunnescens - Collected at Spring Creek Meadow.
California Sedge: Carex californica -
Gray Sedge, Silvery Sedge: Carex canescens ssp. canescens (Synonyms: Carex canescens var. robustina, Carex canescens var. robustior, Carex subloliacea) -
Cusick's Sedge: Carex cusickii (Synonym: Carex teretiuscula var. ampla) - Collected near the Conboy Lake NWR headquarters.
Constance's Sedge, Davy's Sedge: Carex davyi (Synonym: Carex constanceana) -
Northern Sedge: Carex deflexa var. bootii (Synonyms: Carex brevipes, Carex globosa var. brevipes, Carex rossii var. brevipes) -
Dewey's Sedge: Carex deweyana var. deweyana -
Short-leaf Sedge, Softleaf Sedge: Carex disperma (Synonym: Carex tenella) -
Bristly Sedge, Muricate Sedge, Prickly Sedge, Star Sedge, Stellate Sedge: Carex echinata ssp. echinata (Synonyms: Carex angustior, Carex echinata var. echinata, Carex muricata, Carex ormantha) -
Engelmann's Sedge, Mt. Adams Sedge: Carex engelmannii (Synonyms: Carex breweri var. paddoensis, Carex engelmannii var. paddoensis, Carex paddoensis) -
Big Inflated Sedge: Carex exisiccata (Synonym: Carex vesicaria var. major) -
Greensheathed Sedge, Green-sheath Sedge: Carex feta (Synonym: Carex straminea var. mixta) -
Fragile-sheath Sedge, Fragile-sheathed Sedge: Carex fracta -
Elk Sedge: Carex geyeri -
Hall's Sedge, Oregon Sedge: Carex halliana (Synonym: Carex oregonensis) -
Different Nerve Sedge, Different-veined Sedge, Smooth-fruited Sedge: Carex heteroneura (Synonyms: Carex atrata var. erecta) -
Hood's Sedge: Carex hoodii -
Sheep Sedge, Small-head Sedge: Carex illota -
Long-stolon Sedge, Long-rhizome Sedge: Carex inops ssp. inops (Synonyms: Carex pensylvanica, Carex pensylvanica var. vespertina, Carex verecunda, Carex vespertina) -
Smooth-beaked Sedge: Carex integra -
Jones' Sedge: Carex jonesii (Synonym: Carex nervina var. jonesii) -
Smoothstem Sedge, Smooth-stemmed Sedge: Carex laeviculmis (Synonym: Carex deweyana ssp. sparsiflora) -
Slender Bog Sedge, Slender Woolly Sedge, Wiregrass, Woolly-fruited Sedge: Carex lasiocarpa (Synonyms: Carex lanuginosa, Carex lanuginosa var. americana, Carex lasiocarpa ssp. americana, Carex lasiocarpa var. americana) -
Kellogg's Sedge, Lakeshore Sedge: Carex kelloggii var. kelloggii (Synonyms: Carex hindsii var. brevigluma, Carex lenticularis var. lipocarpa, Carex lenticularis var. paullifructus, Carex vulgaris var. lipocarpa) -
Sierra Hare Sedge, Little Hare Sedge: Carex leporinella -
Mud Sedge, Quagmire Sedge: Carex limosa -
Spring Sedge, Woodrush Sedge: Carex luzulina (Synonyms: Carex ablata, Carex luzulina var. ablata, Carex luzulina var. luzulina, Carex owyheensis) -
Merten's Sedge: Carex mertensii (Synonym: Carex columbiana) -
Smallwing Sedge, Small-winged Sedge: Carex microptera (Synonyms: Carex festivella, Carex limnophila, Carex macloviana ssp. festivella, Carex macloviana var. microptera, Carex microptera var. crassinervia , Carex microptera var. limnophila) -
Many-rib Sedge: Carex multicostata -
Spikenard Sedge: Carex nardina (Synonyms: Carex elyniformis, Carex hepburnii, Carex nardina ssp. hepburnii, Carex nardina var. atriceps, Carex nardina var. hepburnii, Carex stantonensis) -
Nebraska Sedge: Carex nebrascensis (Synonyms: Carex jamesii, Carex nebrascensis var. eruciformis, Carex nebrascensis var. praevia, Carex nebrascensis var. ultriformis) -
Alpine Nerved Sedge, Veined Sedge: Carex neurophora (Synonym: Carex vernacula var. hobsonii) -
Black Alpine Sedge: Carex nigricans -
Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri) -
Woolly Sedge: Carex pellita - (Not found above 4000'.)
Liddon's Sedge: Carex petasata (Synonym: Carex liddonii) -
Dunhead Sedge, Alpine Hare Sedge: Carex phaeocephala -
Clustered Field Sedge, Blackcreeper Sedge: Carex praegracilis -
Northern Meadow Sedge: Carex praticola (Synonyms: Carex piperi, Carex platylepis, Carex pratensis) - Collected at Peterson Prairie.
Presl's Sedge: Carex preslii -
Pyrenaean Sedge, Timberline Sedge: Carex micropoda (Synonyms: Carex crandallii, Carex jacobi-peteri, Carex pyrenaica ssp. micropoda, Carex pyrenaica var. mondsii) -
Raynold's Sedge: Carex raynoldsii (Synonym: Carex lyallii) -
Ross's Sedge: Carex rossii (Carex deflexa ssp. media, Carex deflexa var. farwellii, Carex deflexa var. rossii, Carex diversistylis, Carex farwellii, Carex novae-angliae var. rossii) -
Rocky Mountain Sedge, Mountain Sedge, Sierra Alpine Sedge: Carex scopulorum var. bracteosa (Synonyms: Carex campylocarpa, Carex campylocarpa ssp. affinis, Carex gymnoclada) -
Analogue Sedge, Short-beak Sedge, Shortbeaked Sedge: Carex simulata - (Not found above 4000.)
Showy Sedge: Carex spectabilis (Synonyms: Carex invisa, Carex nigella, Carex spectabilis var. superba, Carex tolmiei, Carex tolmiei var. invisa) -
Awl-fruited Sedge, Sawbeak Sedge: Carex stipata var. stipata (Synonyms: Carex stipata var. crassicurta, Carex stipata var. subsecuta) - (Not found above 4000'.)
Mt. Shasta Sedge, Shasta Sedge: Carex straminiformis -
Brown Sedge, Brown-headed Sedge, Rusty Sedge: Carex subfusca (Synonyms: Carex macloviana ssp. subfusca, Carex teneraeformis, Carex teneriformis) -
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 var. utriculata) -
Foetid Sedge: Carex vernacula (Synonyms: C. foetida, Carex foetida var. vernacula) -
Blister Sedge, Inflated Sedge, Oxbow Sedge, Small Inflated Sedge: Carex vesicaria (Synonyms: Carex inflata, Carex vesicaria var. vesicaria) -
