Carex - Burke Herbarium Image Collection

Burke Herbarium Image Collection

Vascular Plants, Macrofungi, & Lichenized Fungi of Washington

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Carex

sedge

Image © Dana Visalli

Specimens

Photos

Origin: Native

Conservation Status: Not of concern

Description:

[none provided]

Accepted Name:

Carex
Publication: Sp. Pl. 2: 972. 1753; Gen. Pl. ed. 5, 420. 1754.

Synonyms & Misapplications:

(none provided)

Species in Carex:

Carex abrupta – abrupt-beaked sedge Occurring in the Cascades and west of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Carex albonigra – black-and-white-scaled sedge Occurring in the Cascade and Olympic mountains of Washington; Alaska to Washington, east to and south in the Rocky Mountains.
Carex amplifolia – big-leaf sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Carex angustata – narrow-leaved sedge Occuring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho.
Carex anthoxanthea – grassy-slope arctic sedge, yellow-flowered sedge Occurring west of the Cascades crest in lowland western Washington; Alaska to Washington.
Carex aperta – Columbia sedge Occurring on both sides of the Cascades crest in Washington; central British Columbia to southern Oregon, east to Alberta, Montana, and Wyoming.
Carex aquatilis – water sedge Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, east to the Great Lakes and the northeastern U.S.
var. aquatilis – water sedge Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, east to the Great Lakes and the northeastern U.S.
var. dives – Sitka sedge Occurring chiefly west of the Cascades crest in Washington; Alaska to California, disjunct in Montana.
Carex arcta – northern clustered sedge Occurring on both sides of the Cascades crest in Washington; Yukon to California, east to Alberta and Montana; also in eastern North America.
Carex atherodes – awned sedge, wheat sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east across North America except in the southeastern U.S.; circumboreal.
Carex athrostachya – slender-beak sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Great Plains.
Carex atratiformis
Carex atrosquama – black-scale sedge Occurring east of the Cascades crest in northern Washington; Alaska to Oregon, east to Northwest Territories, Alberta, Idaho, Montana, Utah, and Colorado.
Carex aurea – golden sedge, pumpkin sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
Carex bebbii – Bebb's sedge Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to the Atlantic Coast.
Carex bolanderi – Bolander's sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Rocky Mountains, also in Mexico.
Carex brevior – Plains oval sedge, short-beaked sedge Occurring east of the Cascades crest in Washington in eastern Washington; southern British Columbia to eastern Washington, east to the Atlantic Coast.
Carex breweri – Brewer's sedge Occurring in the Cascades Mountains from Mt. Adams and south in Washington; south-central Washington to California and Nevada.
Carex brunnescens – brown sedge Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
ssp. brunnescens – brown sedge Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
Carex buchananii – silver-spiked sedge
Carex buxbaumii – brown bog sedge, Buxbaum's sedge Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east across North America to the Atlantic Coast.
Carex californica – California sedge Occurring west of the Cascades crest in Washington; Washington to California, disjunct in northern Idaho.
Carex canescens – silvery sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
ssp. canescens – grey sedge, silvery sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
Carex capillaris – hair sedge Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America; circumboreal.
Carex capitata – capitate sedge Occurring in northwestern and north-central Washington near the Canadian border; Alaska to California, east to the Rocky Mountains in the U.S. and east across Canada to the Atlantic Coast; circumboreal.
Carex chordorrhiza – cordroot sedge, creeping sedge, rope-root sedge Occurring east of the Cascades crest in Washington; Alaska to Oregon, east across the northern U.S. and Canda to the Atlantic Coast.
Carex circinata – coiled sedge Occurring in the Olympic Mountains in Washington; Alaska to Washington
Carex comosa – bearded sedge, bristly sedge Occurring chiefly west of the Cascades crest in Washington; Washington to California; scattered in the central U.S. and eastern North America.
Carex concinnoides – northwestern sedge, tetrastigmatic sedge Occurring chiefly east of the Cascades crest in Washington; central British Columbia to California.
Carex cordillerana – cordilleran sedge Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta, Montana, and Utah.
Carex crawei – Crawe's sedge Known historically (1841) from northeastern Washington; southeastern British Columbia to northeastern Washington, east to Montana and Utah, east to Newfoundland and Georgia.
Carex crawfordii – Crawford's sedge Occurring chiefly east of the Cascades crest in Washington, but also along the coast where introduced in ditches, irrigation ponds and cranberry farms. Alaska to Oregon, east to the Atlantic Coast.
Carex cusickii – Cusick's sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Wyoming, Utah, and Nevada.
Carex davyi – Constance's sedge, Davy's sedge Known historically (1909) from the Mt. Adams area; otherwise Lake County, Oregon to California.
Carex deflexa – mountain mat sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Colorado, east across Canada to the Great Lakes region and northeastern North America.
var. boottii – northern sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Colorado.
Carex densa – dense sedge Occurring west of the Cascades crest in Washington; Washington to California.
Carex deweyana – Dewey's sedge Occurring east of the Cascades crest in northeastern Washington; Alaska to northeastern Washington, east to Northwest Territory and south through Montana to Colorado, further eastward to the Atlantic Coast.
var. deweyana – Dewey's sedge Occurring east of the Cascades crest in northeastern Washington; Alaska to northeastern Washington, east to Northwest Territory and south through Montana to Colorado, further eastward to the Atlantic Coast. Uncommon in the Pacific Northwest.
Carex diandra – lesser panicled sedge, lesser tussock sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Great Plains, Great Lakes region, and northeastern North America.
Carex disperma – short-leaf sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the northern Great Plains, Great Lakes region, and northeastern North America; circumboreal.
Carex divulsa – Leers's sedge Occurring west of the Cascades crest in Washington in lowland areas; also known in Oregon, California and eastern North America.
ssp. leersii – Leer's sedge Occurring west of the Cascades crest in Washington in lowland areas; also known in Oregon and California.
Carex douglasii – Douglas's sedge Occurring chiefly east of the Cascades in Washington; central British Columbia to California, east to central North America.
Carex duriuscula – narrowleaf sedge, spike-rush sedge
Carex eburnea – bristle-leaved sedge Occurring east of the Cascades crest in northeastern Washington; Alaska to Washington and Montana, east across Canada to the Atlantic Coast, also east from the northern Great Plains in the U.S. to the Atlantic Coast.
Carex echinata – star sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Great Plains, Great Lakes region, and eastern North America; circumboreal.
ssp. echinata – star sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Great Plains, Great Lakes region, and eastern North America; circumboreal.
ssp. phyllomanica – coastal star sedge Occurring west of the Cascades crest in Washington; Alaska to California.
Carex engelmannii – Engelmann's sedge Occurring in the Olympic Mountains and in the Cascades Mountains south to Mt. Adams in Washington; southern British Columbia to Mt. Adams in Washington, east to Idaho, Montana, and Colorado.
Carex exsiccata – big inflated sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Carex feta – green-sheath sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Carex filifolia – thread-leaved sedge Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains.
var. filifolia – thread-leaf sedge Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains.
Carex flava – yellow sedge, yellow-green sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to Washington, east across the northern U.S. and Canada to northeastern North America.
Carex fracta – fragile-sheath sedge Occurring on both sides of the Cascades crest in Washington; Washington to California.
Carex geyeri – elk sedge, Geyer's sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Carex gynocrates – yellow bog sedge Occurring east of the Cascades crest in north-central Washington;
Carex halliana – Hall's sedge Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California.
Carex hassei – false golden sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Carex haydeniana – cloud sedge, Hayden's sedge Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Colorado.
Carex hendersonii – Henderson's sedge Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; southwestern British Columbia to California, disjunct in northern Idaho.
Carex heteroneura – different-veined sedge, smooth-fruited sedge Occurring east of the Cascades crest along the Canadian border in Washington British Columbia to California, east to Sasketchewan and the Rocky Mountains.
Carex hoodii – Hood's sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Sasketchewan, South Dakota, and Colorado.
Carex hystericina – porcupine sedge Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Carex illota – small-head sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Colorado.
Carex infirminervia – weak-veined sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Colorado.
Carex inops – long-stolon sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, Great Plains, and Great Lakes region.
ssp. inops – long-stolon sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, Great Plains, and Great Lakes region.
Carex integra – smooth-beaked sedge Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California.
Carex interior – inland sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Carex interrupta – green-fruited sedge, interrupted sedge Occurring chiefly west of the Cascades crest in Washington; southwestern British Columbia to southwestern Oregon.
Carex jonesii – Jones' sedge Occurring on both sides of the Cascades crest in Washington; northern Washington to California, east to the Rocky Mountains.
Carex kelloggii – Kellogg's sedge, lakeshore sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
var. impressa – few-ribbed sedge, mountain shore sedge Occurring on both sides of the Cascades crest in Washington; Washington to California.
var. kelloggii – Kellogg's sedge, lakeshore sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
var. limnophila – coastal shore sedge Occurring west of the Cascades crest in Washington strictly along the coast, sometimes introduced in the West Cascades lowlands; Alaska to California.
Carex kobomugi – Japanese sedge Occurring west of the Cascades crest in southwestern Washington; known historically from Portland, Oregon; also in eastern North America.
Carex lachenalii – two-parted sedge
Carex lacustris – lake sedge Occurring east of the Cascades crest in northeastern Washington; Alberta to Washington, east across the northern half of North America to the Atlantic Coast.
Carex laeviculmis – smooth-stemmed sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho, Montana, and Wyoming.
Carex lasiocarpa – wiregrass sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Utah, the Great Plains of Canada, and from the Great Lakes region to northeastern North America; circumboreal.
Carex leporina – hare sedge, oval broom sedge, oval sedge Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, and introduced in eastern North America.
Carex leporinella – Sierra hare sedge Occurring on both sides of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Utah.
Carex leptalea – delicate sedge, jelly bean sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Carex leptopoda – short-scaled sedge, slenderfoot sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Carex limosa – mud sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Utah, northern Great Plains, Great Lakes region, and eastern North America.
Carex livida – pale sedge Occurring west of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, Colorado, and eastern North America; also in South America; circumpolar.
Carex longii – Long's sedge Occurring west of the Cascades crest in Washington; southwestern British Columbia to California.
Carex luzulina – spring sedge, woodrush sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Wyoming.
Carex lyngbyei – Lyngbye's sedge Occurring west of the Cascades crest in Washington; Alaska to California, east across Canada to Greenland and Europe.
Carex macloviana – Falkland Islands sedge Occurring east of the Cascades crest in northern Washington; Alaska to Washington, east to Alberta, Montana, and Colorado; circumboreal, also in South America.
Carex macrocephala – bighead sedge Occurring west of the Cascades crest along the coast in Washington; Alaska to Oregon; northern Pacific Rim.
Carex macrochaeta – long-awn sedge Occurring west of the Cascades crest in Washington; Alaska to Oregon.
Carex magellanica – boreal bog sedge, poor sedge Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, east to Idaho, Montana, Utah, and Colorado, also to the Great Lakes region and eastern North America; circumboreal; also in South America.
ssp. irrigua – poor sedge Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, east to Idaho, Montana, Utah, and Colorado, also to the Great Lakes region and eastern North America; circumboreal; also in South America.
Carex media – Montana sedge, Scandinavian sedge Occurring east of the Casades crest in Washington; Alaska to Oregon and Montana, east across Canada to the Great Lakes region and northeastern North America; circumboreal.
Carex mertensii – Mertens' sedge Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to Alberta and western Montana.
Carex micropoda – timberline sedge Occurring in the Cascades Range and Olympic Mountains in Washington; Alaska to northeastern Oregon, east to the Rocky Mountains.
Carex microptera – small-winged sedge Occurring on both sides of the Cascades crest in Washington; Yukon Territory to Mexico, east to the Rocky Mountains.
Carex nardina – spikenard sedge Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon and Nevada, east to the Rocky Mountains, and east across northern Canada to eastern North America; circumpolar.
Carex nebrascensis – Nebraska sedge Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and northern Great Plains.
Carex neurophora – alpine nerve sedge Occurring in the Cascades Range and Olympic Mountains in Washington; Washington to California, east to Montana and Colorado.
Carex nigricans – black alpine sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Carex nudata – torrent sedge Occurring along the Cascades crest in south-central Washington; Washington to California.
Carex obnupta – slough sedge Occurring chiefly west of the Cascades crest in Washington; northern British Columbia to California.
Carex obtusata – blunt sedge Occurring west of the Cascades crest in the Olympic Mountains in Washington; Alaska to Washington, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Carex occidentalis
Carex pachycarpa – furrowed broomsedge Occurring on both sides of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Carex pachystachya – starry sedge, thick-headed sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Saskatoon and Colorado.
Carex pallescens – pale green sedge Occurring west of the Cascades crest in Washington; southwestern British Columbia to southwestern Washington, east to northern Idaho and western Montana.
Carex pansa – sand sedge Occurring west of the Cascades crest in Washington along coastal areas; British Columbia to California.
Carex parryana – Parry's sedge Occurring east of the Cascades crest in north-central Washington; Alaska to Washington, Idaho, and Nevada, east to the Rocky Mountains, east across Canada to Ontario.
Carex pauciflora – few-flowered sedge Occurring west of the Cascades crest in Washington; Alaska to Washington, east across Canada to northeastern North America; circumpolar.
Carex paysonis – Payson's sedge
Carex pellita – woolly sedge Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Carex pendula – pendulous sedge Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Carex petasata – Liddon's sedge Occurring east of the Cascades crest in Washington; Alaska to California, east to Northwest Territory, Saskatoon, and the Rocky Mountains.
Carex phaeocephala – mountain hare sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, and Colorado.
Carex pluriflora – black bog sedge Occurring west of the Cascades crest in Washington; Alaska to northwestern Washington.
Carex podocarpa – graceful mountain sedge
Carex praeceptorum – teacher's sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Colorado.
Carex praegracilis – clustered field sedge Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains; also introduced from Wisconsin to Missouri, east to the Atlantic.
Carex praticola – northern meadow sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the northern Great Plains, then scattered further east to the Atlantic Coast.
Carex preslii – Presl's sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana.
Carex proposita – potato chip sedge, Smoky Mountain sedge Occurring chiefly east of the Cascades crest in Washington; also in Idaho and California.
Carex rariflora
Carex raynoldsii – Raynolds' sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Carex retrorsa – retrorse sedge Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east to the Rocky Mountains, Great Lakes region, and northeastern North America.
Carex richardsonii – Richardson's sedge
Carex rossii – Ross' sedge Occurring on both sides of the Cascades crest in Washington Alaska to California, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Carex rostrata – northern beaked sedge Occurring east of the Cascades crest in Washington; Alaska to eastern Washington and Montana, east to Minnesota and Newfoundland; circumboreal.
Carex saxatilis – limestone sedge, russet sedge Occurring on both sides of the Cascades crest in Washington; Alaska to Washington, east across the northern U.S. and Canada to northeastern North America; circumboreal.
Carex scirpoidea – single-spike sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
ssp. pseudoscirpoidea – western single-spiked sedge Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana and Colorado.
ssp. scirpoidea – northern single-spike sedge Occurring on both sides of the Cascades crest in Washington; Alaska to Nevada, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
ssp. stenochlaena – Alaska singlespike sedge Occurring on both sides of the Cascades crest in Washington; Alaska to Washington, disjunct in Lane County, Oregon and alpine in Montana.
Carex scoparia – pointed broomsedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California, most of the Rocky Mountains, Great Plains, and central and eastern North America.
Carex scopulorum – mountain sedge Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains.
var. bracteosa – Sierra alpine sedge Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, in and east Cascades, east to Montana and Utah.
var. prionophyllum – firethread sedge Occurring east of the Cascades crest in eastern Washington; eastern Washington east to Idaho and Montana.
Carex sheldonii – Sheldon's sedge Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Idaho and Nevada.
Carex siccata – dry-spike sedge Occurring east of the Cascades crest in Washington; Yukon Territory and Northwest Territory to Washington, also in the southern Rocky Mountains, east across Canada to the Great Lakes region, and eastern North America.
Carex simulata – analogue sedge Occurring east of the Cascades crest in central and southern Washington; British Columbia to California, east to the northern Great Plains and Rocky Mountains.
Carex spectabilis – showy sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, Wyoming, and Utah.
Carex stenoptila – riverbank sedge Occurring east of the Cascades crest in north-central Washington; Washington to Idaho and Montana.
Carex stipata – awl-fruited sedge, sawbeak sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
var. stipata – awl-fruited sedge, sawbeak sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Carex straminiformis – Mt. Shasta sedge Occurring in the Cascades of southern Washington; southern Washington to California, east to Idaho and Utah.
Carex stylosa – long-style sedge Occurring west of the Cascades crest in Washington; Alaska to Washington, also in eastern Canada and Greenland.
Carex subbracteata – small-bracted sedge Occurring west of the Cascades crest in Washington; introduced from southwestern British Columbia to Lincoln County, Oregon; native from Coos County Oregon to California.
Carex subfusca – rusty sedge Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho, Utah, and New Mexico.
Carex sychnocephala – many-headed sedge Occurring east of the Cascades crest in Washington; Alaska to California, east across the northern U.S. and Canada to the Atlantic Coast; disjunct in Colorado.
Carex sylvatica – European woodland sedge Occurring west of the Cascades crest in Washington; southwestern British Columbia to western Washington.
Carex tahoensis – Lake Tahoe sedge Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to Alberta, Montana, and Colorado.
Carex tenera – quill sedge, slender sedge Occurring east of the Cascades crest in Washington; British Columbia to northeastern Washington, east to the Rocky Mountains, northern Great Plains, and eastern North America.
Carex tenuiflora – sparse-flower sedge Occurring east of the Cascades crest in northern Washington; Alaska to northern Washington, east across the northern U.S. and Canada to the Atlantic Coast; circumboreal.
Carex tribuloides – tribulation sedge Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to western Oregon; native to central and eastern North America.
var. tribuloides – blunt broom sedge Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to western Oregon; native to central and eastern North America.
Carex tumulicola – foothill sedge Occurring west of the Cascades crest in Washington; southwestern British Columbia to California.
Carex unilateralis – one-sided sedge Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Carex utriculata – beaked sedge, inflated sedge, Northwest Territory sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Carex vallicola – valley sedge Occurring east of the Cascades crest in northern Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Carex vernacula – foetid sedge Occurring in the Cascade Mountains in Washington; southern Washington to California, east to Idaho, Wyoming, and Colorado.
Carex vesicaria – inflated sedge, oxbow sedge Occurring on both sides of the Cascades crest in Washington; British Columbia to California.
Carex viridula – green sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
ssp. viridula – greenish sedge, little green sedge Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Carex vulpinoidea – fox sedge Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to Oregon, east to the Atlantic Coast; introduced in California and Nevada.
Carex xerantica – dryland sedge, sage sedge
Carex zikae – short-stemmed sedge, Zika's sedge Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.

Additional Resources:

PNW Herbaria: Specimen records of Carex in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Carex checklist entry

OregonFlora: Carex information

E-Flora BC: Carex atlas page

CalPhotos: Carex photos

2208 photographs:

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