Cyperaceae
Sedge Family
14 genera
203 species
28 subspecies and varieties
203 species
28 subspecies and varieties
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Index to genera:
Amphiscirpus, Bolboschoenus, Carex, Cyperus, Dulichium, Eleocharis, Eriophorum, Isolepis, Kobresia, Lipocarpha, Rhynchospora, Schoenoplectus, Scirpus, TrichophorumBolboschoenus maritimus – seacoast tuberous bulrush
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America; cosmopolitan.
Habitat: Salt marshes, wet meadows, and margins of ponds, especially in alkaline or saline areas.
Origin: Native
Flowers: June-September
Growth Duration: perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America; cosmopolitan.
Habitat: Salt marshes, wet meadows, and margins of ponds, especially in alkaline or saline areas.
Origin: Native
Flowers: June-September
Growth Duration: perennial
• ssp. paludosus – saltmarsh bulrush, seacoast bulrush
Carex albonigra – black-and-white-scaled sedge
Distribution: Occurring in the Cascade and Olympic mountains of Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Alpine areas, high elevation talus and scree.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Occurring in the Cascade and Olympic mountains of Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Alpine areas, high elevation talus and scree.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex amplifolia – big-leaf sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana, also in New Mexico.
Habitat: Swamps, bogs and other wet places, lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana, also in New Mexico.
Habitat: Swamps, bogs and other wet places, lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May-July
Growth Duration: perennial
Carex angustata – many-fruit sedge, wide-fruited sedge
Distribution: Chiefly east of the Cascades crest in Washington; Washington south to California, east to Idaho.
Habitat: Wet meadows in riparian zones from low to moderate elevations.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Chiefly east of the Cascades crest in Washington; Washington south to California, east to Idaho.
Habitat: Wet meadows in riparian zones from low to moderate elevations.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex anthoxanthea – grassy-slope arctic sedge, yellow-flowered sedge
Distribution: Known from along the coast in Washington; Alaska south to Washington.
Habitat: Bogs and wet meadows from low to moderate elevations.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Known from along the coast in Washington; Alaska south to Washington.
Habitat: Bogs and wet meadows from low to moderate elevations.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex aquatilis
Distribution: Circumboreal at high latitudes; east of the Cascades in Washington and Oregon
Habitat: Standing water or saturated soil, foothills to near timberline in the mountains
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Circumboreal at high latitudes; east of the Cascades in Washington and Oregon
Habitat: Standing water or saturated soil, foothills to near timberline in the mountains
Origin: Native
Flowers: June - August
Growth Duration: perennial
• var. aquatilis – water sedge
• var. dives – Sitka sedge
Carex arcta – northern clustered sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex atherodes – awned sedge, wheat sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex athrostachya – slender-beak sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex atrosquama – black-scale sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex aurea – golden sedge, pumpkin sedge
Distribution: 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.
Habitat: Moist or wet places from the lowlands to near timberline in the mountains
Flowers: April-August
Growth Duration: perennial
Distribution: 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.
Habitat: Moist or wet places from the lowlands to near timberline in the mountains
Flowers: April-August
Growth Duration: perennial
Carex bolanderi – Bolander's sedge
Distribution: Occurring on both sides of the Cascades crest in Washington British Columbia to California, east to Rocky Mountains, also in Mexico.
Habitat: Springs, moist slopes, riparian forests, shores, upper margins of salt marshes, and ditches.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington British Columbia to California, east to Rocky Mountains, also in Mexico.
Habitat: Springs, moist slopes, riparian forests, shores, upper margins of salt marshes, and ditches.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Carex brevior – Plains oval sedge, short-beaked sedge
Origin: Native
Flowers: May - July
Growth Duration: perennial
Origin: Native
Flowers: May - July
Growth Duration: perennial
Carex breweri – Brewer's sedge
Distribution: Occurring in the Cascades Mountains from Mt. Adams and south in Washington; south-central Washington to California and Nevada.
Habitat: Volcanic ash, pumice, scree, talus, rocky slopes in the subalpine and alpine.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Occurring in the Cascades Mountains from Mt. Adams and south in Washington; south-central Washington to California and Nevada.
Habitat: Volcanic ash, pumice, scree, talus, rocky slopes in the subalpine and alpine.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex brunnescens – brown sedge
Distribution: Circumboreal at high latitudes, south through the Cascades to the Siskiyou Mountains of Oregon
Habitat: Wet places in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Circumboreal at high latitudes, south through the Cascades to the Siskiyou Mountains of Oregon
Habitat: Wet places in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
• ssp. brunnescens – brownish sedge
Carex buxbaumii – brown bog sedge, Buxbaum's sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex californica – California sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex canescens – silvery sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
• ssp. canescens – grey sedge, silvery sedge
Carex capitata – capitate sedge
Distribution: Occurring in northwestern and north-central Washington near the Canadian border; Alaska south to California and Nevada (but not in Oregon), east to the Rocky Mountains in the U.S. and east across Canada to the Atlantic Coast; circumboreal.
Habitat: Alpine slopes.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Occurring in northwestern and north-central Washington near the Canadian border; Alaska south to California and Nevada (but not in Oregon), east to the Rocky Mountains in the U.S. and east across Canada to the Atlantic Coast; circumboreal.
Habitat: Alpine slopes.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex chordorrhiza – cordroot sedge, creeping sedge, rope-root sedge
Origin: Native
Growth Duration: perennial
Origin: Native
Growth Duration: perennial
Carex comosa – bearded sedge, bristly sedge
Distribution: Widespread in eastern United States, occasional in Washington, Idaho and Montana
Habitat: Marshes and wet meadows from the lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Distribution: Widespread in eastern United States, occasional in Washington, Idaho and Montana
Habitat: Marshes and wet meadows from the lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Carex concinnoides – northwestern sedge, tetrastigmatic sedge
Origin: Native
Flowers: April - July
Growth Duration: perennial
Origin: Native
Flowers: April - July
Growth Duration: perennial
Carex crawfordii – Crawford's sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex cusickii – Cusick's sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Montana, and Wyoming.
Habitat: Wetlands, lake and pond edges, and other wet areas.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Montana, and Wyoming.
Habitat: Wetlands, lake and pond edges, and other wet areas.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Carex deflexa – mountain mat sedge
Origin: Native
Growth Duration: perennial
Origin: Native
Growth Duration: perennial
• var. boottii – northern sedge
Carex deweyana – dewey's sedge
Distribution: 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.
Habitat: Open or riparian forest, swamps, cliffs, damp thickets, and mesic meadow edges.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: 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.
Habitat: Open or riparian forest, swamps, cliffs, damp thickets, and mesic meadow edges.
Origin: Native
Flowers: May-July
Growth Duration: perennial
• var. deweyana – Dewey's sedge
Carex diandra – lesser panicled sedge, lesser tussock sedge
Origin: Native
Flowers: June - July
Growth Duration: perennial
Origin: Native
Flowers: June - July
Growth Duration: perennial
Carex douglasii – Douglas' sedge
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to California, east to central North America.
Habitat: Dry to wet soils in sagebrush grasslands, riparian zones, and forest margins.
Origin: Native
Flowers: April-June
Growth Duration: perennial
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to California, east to central North America.
Habitat: Dry to wet soils in sagebrush grasslands, riparian zones, and forest margins.
Origin: Native
Flowers: April-June
Growth Duration: perennial
Carex echinata
Distribution: Circumboreal, south to North Carolina and, in the mountains, to California
Habitat: Swamps, bogs and other wet places, lowlands to moderate elevations in the mountains
Origin: Native
Growth Duration: perennial
Distribution: Circumboreal, south to North Carolina and, in the mountains, to California
Habitat: Swamps, bogs and other wet places, lowlands to moderate elevations in the mountains
Origin: Native
Growth Duration: perennial
• ssp. echinata – star sedge
• ssp. phyllomanica – coastal star sedge
Carex engelmannii – Engelmann's sedge
Distribution: 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.
Habitat: Dry or moist fellfields, rocky slopes, talus and scree, cliffs and meadows in the alpine.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: 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.
Habitat: Dry or moist fellfields, rocky slopes, talus and scree, cliffs and meadows in the alpine.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex exsiccata – big inflated sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex feta – green-sheath sedge
Distribution: West of the Cascades, British Columbia to California
Habitat: Marshes and wet meadows from the lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Distribution: West of the Cascades, British Columbia to California
Habitat: Marshes and wet meadows from the lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Carex filifolia – thread-leaved sedge
Origin: Native
Flowers: April - July
Growth Duration: perennial
Origin: Native
Flowers: April - July
Growth Duration: perennial
• var. filifolia – thread-leaf sedge
Carex flava – yellow sedge, yellow-green sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex fracta – fragile-sheath sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex geyeri – elk sedge, Geyer's sedge
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Grassy slopes, meadows, and forest openings from the sagebrush foothills to middle elevations in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Grassy slopes, meadows, and forest openings from the sagebrush foothills to middle elevations in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Carex gynocrates – northern bog sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex hassei – false golden sedge
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Origin: Native
Growth Duration: perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Origin: Native
Growth Duration: perennial
Carex haydeniana – cloud sedge, Hayden's sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex hendersonii – Henderson's sedge
Distribution: West of the Cascades, British Columbia to California
Habitat: Boggy areas and wet woods, low to mid-elevations in the mountains
Origin: Native
Flowers: May - June
Growth Duration: perennial
Distribution: West of the Cascades, British Columbia to California
Habitat: Boggy areas and wet woods, low to mid-elevations in the mountains
Origin: Native
Flowers: May - June
Growth Duration: perennial
Carex heteroneura – different-veined sedge, smooth-fruited sedge
Distribution: Occurring along the Canadian border in Washington; British Columbia south to California, east to Sasketchewan and Rocky Mountains.
Habitat: Moist to wet sites in the subalpine and alpine zones.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Occurring along the Canadian border in Washington; British Columbia south to California, east to Sasketchewan and Rocky Mountains.
Habitat: Moist to wet sites in the subalpine and alpine zones.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex inops – long-stolon sedge
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia to California, south in Rocky Mountains from Alberta to New Mexico, east to the Great Plains and Great Lakes region.
Habitat: Forest openings, open slopes, and near streams in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia to California, south in Rocky Mountains from Alberta to New Mexico, east to the Great Plains and Great Lakes region.
Habitat: Forest openings, open slopes, and near streams in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: perennial
• ssp. inops – long-stolon sedge
Carex interrupta – green-fruited sedge, interrupted sedge
Distribution: Along the Columbia River from Douglas County through Klickitat County, south in Oregon west of the Cascades
Habitat: Rocky banks and streambeds, and other low, wet places
Origin: Native
Flowers: April - May
Growth Duration: perennial
Distribution: Along the Columbia River from Douglas County through Klickitat County, south in Oregon west of the Cascades
Habitat: Rocky banks and streambeds, and other low, wet places
Origin: Native
Flowers: April - May
Growth Duration: perennial
Carex kelloggii
Distribution: Across Canada, south to California (in the mountains) and Massachusetts
Habitat: Wet meadows and streambanks, sea level to near timberline
Origin: Native
Flowers: May - August
Distribution: Across Canada, south to California (in the mountains) and Massachusetts
Habitat: Wet meadows and streambanks, sea level to near timberline
Origin: Native
Flowers: May - August
• var. impressa – few-ribbed sedge
• var. kelloggii – Kellogg's sedge, lakeshore sedge
• var. limnophila – lakeshore sedge
Carex lacustris – lake sedge
Distribution: Occurring in the northeastern corner of Washington; Alberta south to Idaho, east across the northern half of North America to the Atlantic Coast.
Habitat: Wetland, swamps, and marshes.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Occurring in the northeastern corner of Washington; Alberta south to Idaho, east across the northern half of North America to the Atlantic Coast.
Habitat: Wetland, swamps, and marshes.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Carex laeviculmis – smooth-stemmed sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex leporina – hare sedge, oval broom sedge, oval sedge
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, and introduced in eastern North America.
Habitat: Seasonally wet prairies, swales, shores, marshes, ditches.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, and introduced in eastern North America.
Habitat: Seasonally wet prairies, swales, shores, marshes, ditches.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Carex leporinella – Sierra hare sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex leptalea – delicate sedge, jelly bean sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Wet areas, both open and forested, from lowlands to subalpine.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Wet areas, both open and forested, from lowlands to subalpine.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Carex livida – pale sedge
Distribution: 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.
Habitat: Peatlands, stream banks, and wet open forests from lowlands to montane.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: 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.
Habitat: Peatlands, stream banks, and wet open forests from lowlands to montane.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Carex luzulina – spring sedge, woodrush sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex lyngbyei – Lyngbye's sedge
Distribution: Circumboreal along the seacoasts; south to northern California in our area
Habitat: Coastal marches and tidal flats
Origin: Native
Flowers: April - July
Growth Duration: perennial
Distribution: Circumboreal along the seacoasts; south to northern California in our area
Habitat: Coastal marches and tidal flats
Origin: Native
Flowers: April - July
Growth Duration: perennial
Carex macrocephala – bighead sedge
Distribution: Occurring in counties along the Puget Sound and outer coast in Washington; Alaska south to Oregon; northern Pacific Rim.
Habitat: Sandy saltwater beaches and dunes.
Origin: Native
Flowers: June-July
Growth Duration: perennial
Distribution: Occurring in counties along the Puget Sound and outer coast in Washington; Alaska south to Oregon; northern Pacific Rim.
Habitat: Sandy saltwater beaches and dunes.
Origin: Native
Flowers: June-July
Growth Duration: perennial
Carex macrochaeta – Alaska long-awn sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex magellanica – boreal bog sedge, poor sedge
Origin: Native
Growth Duration: perennial
Origin: Native
Growth Duration: perennial
• ssp. irrigua – poor sedge
Carex mertensii – Mertens' sedge
Distribution: Alaska south in the mountains and the coast ranges of Oregon to northwest California
Habitat: Wet, open or shaded areas from the lowlands to near timberline
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Alaska south in the mountains and the coast ranges of Oregon to northwest California
Habitat: Wet, open or shaded areas from the lowlands to near timberline
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex microptera – small-winged sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory south to Mexico, east to the Rocky Mountains.
Habitat: Moist to dry meadows and streambanks.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory south to Mexico, east to the Rocky Mountains.
Habitat: Moist to dry meadows and streambanks.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex nardina – spikenard sedge
Distribution: 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.
Habitat: Alpine rocky outcroppings, slopes, and ridges.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: 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.
Habitat: Alpine rocky outcroppings, slopes, and ridges.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex nebrascensis – Nebraska sedge
Distribution: East of the Cascades, Washington to California, east to Kansas
Habitat: Wet meadows and other wet areas, often in alkaline areas, lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Distribution: East of the Cascades, Washington to California, east to Kansas
Habitat: Wet meadows and other wet areas, often in alkaline areas, lowlands to moderate elevations in the mountains
Origin: Native
Flowers: May - July
Growth Duration: perennial
Carex neurophora – alpine nerve sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex nigricans – black alpine sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex obnupta – slough sedge
Distribution: Occurring west of the Cascades crest in Washington; northern British Columbia to California.
Habitat: Sloughs, shores, wet meadows, riparian forest and ditches, in either sun or shade.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest in Washington; northern British Columbia to California.
Habitat: Sloughs, shores, wet meadows, riparian forest and ditches, in either sun or shade.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Carex pachycarpa – furrowed broomsedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex pachystachya – thick-head sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex pansa – sand sedge
Distribution: Along the coast in Washington; Washington south to California.
Habitat: Dunes, meadows, and other open areas along the coast.
Origin: Native
Flowers: May-June
Growth Duration: perennial
Distribution: Along the coast in Washington; Washington south to California.
Habitat: Dunes, meadows, and other open areas along the coast.
Origin: Native
Flowers: May-June
Growth Duration: perennial
Carex parryana – Parry's sedge
Distribution: Alaska to Washington, east to Manitoba, Montana, and Wyoming.
Origin: Native
Distribution: Alaska to Washington, east to Manitoba, Montana, and Wyoming.
Origin: Native
Carex pauciflora – few-flowered sedge
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Washington, east across Canada to northeastern North America; circumpolar.
Habitat: Sphagnum bogs and acidic peatlands, generally at low to moderate elevations in our area.
Origin: Native
Flowers: June-July
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Washington, east across Canada to northeastern North America; circumpolar.
Habitat: Sphagnum bogs and acidic peatlands, generally at low to moderate elevations in our area.
Origin: Native
Flowers: June-July
Growth Duration: perennial
Carex pellita – woolly sedge
Distribution: Widely distributed on both sides of the Cascades crest in Washington; widely distributed throughout North America except southeastern U.S.
Habitat: Wet to dry meadows from low elevations to montane.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; widely distributed throughout North America except southeastern U.S.
Habitat: Wet to dry meadows from low elevations to montane.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Carex pendula – pendulous sedge
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Forest edge and openings, riparian zones, and other moist areas at low elevations, often where disturbed.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Forest edge and openings, riparian zones, and other moist areas at low elevations, often where disturbed.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: perennial
Carex phaeocephala – mountain hare sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex praeceptorum – teacher's sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex praegracilis – clustered field sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex praticola – northern meadow sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex preslii – Presl's sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana.
Habitat: Open, dry to seasonally dry areas from montane to alpine.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana.
Habitat: Open, dry to seasonally dry areas from montane to alpine.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex proposita – Smoky Mountain sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex raynoldsii – Raynolds' sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine and alpine meadows.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine and alpine meadows.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex rostrata – northern beaked sedge
Distribution: Alaska to Washington, east to Montana, and in the Great Lakes region
Habitat: Sphagnum bogs
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Alaska to Washington, east to Montana, and in the Great Lakes region
Habitat: Sphagnum bogs
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex saxatilis – limestone sedge, russet sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex scirpoidea – single-spike sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
• ssp. pseudoscirpoidea – western single-spiked sedge
• ssp. scirpoidea – northern single-spike sedge
• ssp. stenochlaena – Alaska singlespike sedge
Carex scopulorum
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
• var. bracteosa – Sierra alpine sedge
• var. prionophyllum – firethread sedge
Carex spectabilis – showy sedge
Distribution: Alaska to California, east to Alberta and Montana
Habitat: Damp meadows and other wet places, mid- to high elevations in the mountains
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Alaska to California, east to Alberta and Montana
Habitat: Damp meadows and other wet places, mid- to high elevations in the mountains
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex stipata
Distribution: Alaska, Canada and most of the United states
Habitat: Wet ground, lowlands (especially west of the Cascades) to mid-elevations in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Alaska, Canada and most of the United states
Habitat: Wet ground, lowlands (especially west of the Cascades) to mid-elevations in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
• var. stipata – awl-fruited sedge, sawbeak sedge
Carex straminiformis – Mt. Shasta sedge
Origin: Native
Flowers: July - August
Growth Duration: perennial
Origin: Native
Flowers: July - August
Growth Duration: perennial
Carex stylosa – long-style sedge
Distribution: Alaska to Clallam County, Washington, east across Canada to Labrador
Habitat: Usually near the coast
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Alaska to Clallam County, Washington, east across Canada to Labrador
Habitat: Usually near the coast
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex sychnocephala – many-headed sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex tahoensis – Lake Tahoe sedge
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to Alberta, Montana, and Colorado.
Habitat: Generally subalpine and alpine rocky slopes, ridges, talus and scree, and dry meadows.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to Alberta, Montana, and Colorado.
Habitat: Generally subalpine and alpine rocky slopes, ridges, talus and scree, and dry meadows.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Carex tenera – quill sedge, slender sedge
Origin: Native
Flowers: May - August
Growth Duration: perennial
Origin: Native
Flowers: May - August
Growth Duration: perennial
Carex tribuloides – tribulation sedge
Distribution: In Washington known only from King and Pierce counties; central Great Plains of the U.S. north and east to Atlantic Coast
Habitat: Lowland riparian areas, likely associated with disturbance.
Origin: Introduced
Flowers: July-August
Growth Duration: perennial
Distribution: In Washington known only from King and Pierce counties; central Great Plains of the U.S. north and east to Atlantic Coast
Habitat: Lowland riparian areas, likely associated with disturbance.
Origin: Introduced
Flowers: July-August
Growth Duration: perennial
• var. tribuloides – blunt broom sedge
Carex utriculata – beaked sedge, inflated sedge, Northwest Territory sedge
Origin: Native
Growth Duration: perennial
Origin: Native
Growth Duration: perennial
Carex vesicaria – inflated sedge, oxbow sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Carex viridula – green sedge
Origin: Native
Growth Duration: perennial
Origin: Native
Growth Duration: perennial
• ssp. viridula – greenish sedge, little green sedge
Carex vulpinoidea – fox sedge
Distribution: Much of the United States and southern Canada; chiefly east of the Cascades in Washington
Habitat: Marshes and standing water, lowlands and foothills
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Much of the United States and southern Canada; chiefly east of the Cascades in Washington
Habitat: Marshes and standing water, lowlands and foothills
Origin: Native
Flowers: May - August
Growth Duration: perennial
Cyperus acuminatus – sharp-pointed flatsedge, taper-tip flatsedge
Origin: Native
Growth Duration: annual, biennial, perennial
Origin: Native
Growth Duration: annual, biennial, perennial
Cyperus bipartitus – shining flatsedge
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread in North America.
Habitat: Streambanks and other wet places in the valleys and lowlands; tolerant of alkali.
Origin: Native
Flowers: June-August
Growth Duration: annual
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread in North America.
Habitat: Streambanks and other wet places in the valleys and lowlands; tolerant of alkali.
Origin: Native
Flowers: June-August
Growth Duration: annual
Cyperus eragrostis – tall flatsedge
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, also along the southern and eastern U.S. coast.
Habitat: Damp to wet shores, ditches, roadsides, and other disturbed areas at low elevations.
Origin: Introduced from South America
Flowers: June-August
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, also along the southern and eastern U.S. coast.
Habitat: Damp to wet shores, ditches, roadsides, and other disturbed areas at low elevations.
Origin: Introduced from South America
Flowers: June-August
Growth Duration: perennial
Cyperus erythrorhizos – redroot flatsedge
Distribution: Occurring on both sides of the Cascades crest in and in the Columbia River Gorge in Washington; southern British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Pond and lake shores, streambanks, seeps, vernal pools, and ditches at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: annual, perennial
Distribution: Occurring on both sides of the Cascades crest in and in the Columbia River Gorge in Washington; southern British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Pond and lake shores, streambanks, seeps, vernal pools, and ditches at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: annual, perennial
Cyperus esculentus – yellow nut-grass
Distribution: Widely distributed throughout Washington; widespread throughout North America.
Habitat: Moist, low ground along streams and ditches, but sometimes in drier ground.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Widely distributed throughout Washington; widespread throughout North America.
Habitat: Moist, low ground along streams and ditches, but sometimes in drier ground.
Origin: Native
Flowers: June-August
Growth Duration: perennial
• var. leptostachyus – yellow nutgrass
Cyperus lupulinus – Great Plains flatsedge
Distribution: Great Plains to northeastern United States; occasional in the Pacific Northwest.
Habitat: Wet areas.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Great Plains to northeastern United States; occasional in the Pacific Northwest.
Habitat: Wet areas.
Origin: Native
Flowers: June - August
Growth Duration: perennial
• ssp. lupulinus – Great Plains flatsedge
Cyperus schweinitzii – sand flatsedge
Distribution: Occurring in scattered locations across Washington; Washington to Utah and Alberta, east across much of North America.
Habitat: Sandy lakeshores and riverbanks.
Origin: Native east Cascades, introduced in Seattle, WA
Flowers: July-September
Growth Duration: perennial
Distribution: Occurring in scattered locations across Washington; Washington to Utah and Alberta, east across much of North America.
Habitat: Sandy lakeshores and riverbanks.
Origin: Native east Cascades, introduced in Seattle, WA
Flowers: July-September
Growth Duration: perennial
Cyperus squarrosus – awned flatsedge
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: Lake and pond shores, banks of slow moving streams and rivers, and other wet, open areas at low to middle elevations.
Origin: Native
Flowers: June-September
Growth Duration: annual
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: Lake and pond shores, banks of slow moving streams and rivers, and other wet, open areas at low to middle elevations.
Origin: Native
Flowers: June-September
Growth Duration: annual
Cyperus strigosus – false flatsedge, straw-colored flatsedge
Distribution: Widespread in the United States and adjacent Canada.
Habitat: Wet places, along the banks of large streams, in the valleys and lowlands.
Origin: Native
Flowers: July - September
Growth Duration: perennial
Distribution: Widespread in the United States and adjacent Canada.
Habitat: Wet places, along the banks of large streams, in the valleys and lowlands.
Origin: Native
Flowers: July - September
Growth Duration: perennial
Dulichium arundinaceum – three-way sedge
Distribution: Chiefly west of the Cascades in Washington, but also in Chelan, Yakima and Pend Oreille counties; British Columbia south to California, east to Idaho, Montana and to the eastern half of North America.
Habitat: Wet meadows, marshes, and shores of ponds and lakes.
Origin: Native
Flowers: July-September
Growth Duration: perennial
Distribution: Chiefly west of the Cascades in Washington, but also in Chelan, Yakima and Pend Oreille counties; British Columbia south to California, east to Idaho, Montana and to the eastern half of North America.
Habitat: Wet meadows, marshes, and shores of ponds and lakes.
Origin: Native
Flowers: July-September
Growth Duration: perennial
Eleocharis acicularis – needle spikerush
Distribution: Circumboreal, south to Florida and Mexico, found in the Pacific Northwest.
Habitat: Marshes, muddy shores, and other wet places.
Origin: Native
Flowers: June - September
Growth Duration: annual, perennial
Distribution: Circumboreal, south to Florida and Mexico, found in the Pacific Northwest.
Habitat: Marshes, muddy shores, and other wet places.
Origin: Native
Flowers: June - September
Growth Duration: annual, perennial
Eleocharis bella – pretty spikerush
Origin: Native
Flowers: June - September
Growth Duration: annual, perennial
Origin: Native
Flowers: June - September
Growth Duration: annual, perennial
Eleocharis engelmannii – Engelman spikerush
Distribution: Widespread in the northern hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June - September
Growth Duration: annual
Distribution: Widespread in the northern hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June - September
Growth Duration: annual
Eleocharis ovata – ovoid spikerush
Distribution: Widespread in the Northern Hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevagtions in the mountains.
Origin: Native
Flowers: June - September
Growth Duration: annual
Distribution: Widespread in the Northern Hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevagtions in the mountains.
Origin: Native
Flowers: June - September
Growth Duration: annual
Eleocharis palustris – common spikerush
Distribution: Widespread in temperate amd cold-temperate regions of the Northern hemisphere; common in the Pacific Northwest.
Habitat: Wet places from sea level to moderate elevations in the mountains; tolerant of alkali.
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Widespread in temperate amd cold-temperate regions of the Northern hemisphere; common in the Pacific Northwest.
Habitat: Wet places from sea level to moderate elevations in the mountains; tolerant of alkali.
Origin: Native
Flowers: May - August
Growth Duration: perennial
Eleocharis parvula – little-head spikerush
Distribution: Vancouver Island, British Columbia, to Newfoundland, south to northern South America.
Habitat: Wet, saline or alkaline soils.
Origin: Native
Flowers: June - September
Growth Duration: perennial
Distribution: Vancouver Island, British Columbia, to Newfoundland, south to northern South America.
Habitat: Wet, saline or alkaline soils.
Origin: Native
Flowers: June - September
Growth Duration: perennial
Eleocharis quinqueflora – few-flowered spike-rush
Distribution: Circumboreal, south in North America to California and New Jersey.
Habitat: Bogs and other wet places, from the lowlands to high elevations in the mountains.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Circumboreal, south in North America to California and New Jersey.
Habitat: Bogs and other wet places, from the lowlands to high elevations in the mountains.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Eleocharis rostellata – walking sedge, beaked spikerush
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Eleocharis suksdorfiana – Suksdorf spikerush
Distribution: Occurring on both sides of the Cascades crest in Washington, but not in the Olympic Mountains; central British Columbia to California, east to Montana, Wyoming, and Colorado.
Habitat: Shores, peatlands, wet meadows, and seeps from middle elevations to the subalpine.
Origin: Native
Distribution: Occurring on both sides of the Cascades crest in Washington, but not in the Olympic Mountains; central British Columbia to California, east to Montana, Wyoming, and Colorado.
Habitat: Shores, peatlands, wet meadows, and seeps from middle elevations to the subalpine.
Origin: Native
Eriophorum angustifolium – many-spiked bog cotton, many-spiked cotton-grass
Distribution: Circumboreal at high latitudes, extending south into Oregon, Colorado and New York.
Habitat: Cold swamps and bogs at moderate to high elevations in the mountains.
Origin: Native
Flowers: July - August
Growth Duration: perennial
Distribution: Circumboreal at high latitudes, extending south into Oregon, Colorado and New York.
Habitat: Cold swamps and bogs at moderate to high elevations in the mountains.
Origin: Native
Flowers: July - August
Growth Duration: perennial
• ssp. angustifolium – many-spiked cottongrass
Eriophorum chamissonis – Chamisso's cotton-grass, russet cottongrass
Distribution: Occurring west of the Cascades crest and in the northeastern corner of Washington; Alaska to Oregon, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Habitat: Swamps and other wet places from along the coast to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest and in the northeastern corner of Washington; Alaska to Oregon, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Habitat: Swamps and other wet places from along the coast to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Eriophorum gracile – slender cottongrass
Distribution: Alaska, Canada and the northern half on the United States
Habitat: Wet places, mid- to high elevation in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
Distribution: Alaska, Canada and the northern half on the United States
Habitat: Wet places, mid- to high elevation in the mountains
Origin: Native
Flowers: May - August
Growth Duration: perennial
Eriophorum viridicarinatum – tassel cottongrass
Origin: Native
Flowers: June - July
Growth Duration: perennial
Origin: Native
Flowers: June - July
Growth Duration: perennial
Isolepis cernua – low clubrush, low lateral clubrush
Distribution: Coastal from Southern British Columbia south to northern Mexico.
Habitat: Usually in brackish to saline water of marshes, beaches, and shores.
Origin: Native
Flowers: June - August
Growth Duration: annual
Distribution: Coastal from Southern British Columbia south to northern Mexico.
Habitat: Usually in brackish to saline water of marshes, beaches, and shores.
Origin: Native
Flowers: June - August
Growth Duration: annual
Isolepis setacea – Eurasian bulrush, bristle-leaf sedge
Origin: Introduced
Growth Duration: perennial
Origin: Introduced
Growth Duration: perennial
Kobresia myosuroides – Bellard's kobresia, Pacific bog sedge
Origin: Native
Flowers: June - August
Growth Duration: perennial
Origin: Native
Flowers: June - August
Growth Duration: perennial
Lipocarpha aristulata – halfchaff sedge
Distribution: Occurring along the Columbia River in central and south-central Washington; Washington to California and Arizona, east in Great Plains and central U.S.
Habitat: sandy soils of shorelines, stream banks, ponds, and ditches.
Origin: Native
Flowers: June-August
Growth Duration: annual
Distribution: Occurring along the Columbia River in central and south-central Washington; Washington to California and Arizona, east in Great Plains and central U.S.
Habitat: sandy soils of shorelines, stream banks, ponds, and ditches.
Origin: Native
Flowers: June-August
Growth Duration: annual
Lipocarpha micrantha – small-flowered halfchaff sedge
Origin: Native
Flowers: June - September
Growth Duration: annual
Origin: Native
Flowers: June - September
Growth Duration: annual
Lipocarpha occidentalis – western halfchaff sedge
Origin: Native
Flowers: June - September
Growth Duration: annual
Origin: Native
Flowers: June - September
Growth Duration: annual
Rhynchospora alba – white beakrush
Distribution: Alaska to California, east to Idaho, and throughout northeastern United states.
Habitat: Sphagnum bogs and other wet places, lowlands to mid-elevations in the mountains
Origin: Native
Flowers: July - August
Growth Duration: perennial
Distribution: Alaska to California, east to Idaho, and throughout northeastern United states.
Habitat: Sphagnum bogs and other wet places, lowlands to mid-elevations in the mountains
Origin: Native
Flowers: July - August
Growth Duration: perennial
Schoenoplectus acutus – hardstem bulrush, viscous bulrush, common tule
Distribution: Both sides of the Cascades in Washington; throughout all of North America except southeastern U.S.
Habitat: Pond and lake margins, wetland and riparian areas.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Distribution: Both sides of the Cascades in Washington; throughout all of North America except southeastern U.S.
Habitat: Pond and lake margins, wetland and riparian areas.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Schoenoplectus pungens – chairmaker's clubrush, common three square
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread throughout North America.
Habitat: Marshes and wet, low ground; tolerent of alkali.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread throughout North America.
Habitat: Marshes and wet, low ground; tolerent of alkali.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Schoenoplectus subterminalis – swaying clubrush, water clubrush
Distribution: Chiefly west of the Cascades, southern Alaska to southern Oregon; also in northern Idaho, northwest Montana, and eastern United States.
Habitat: Quiet, shallow water 2-8 dm. deep,
Origin: Native
Flowers: July - August
Growth Duration: perennial
Distribution: Chiefly west of the Cascades, southern Alaska to southern Oregon; also in northern Idaho, northwest Montana, and eastern United States.
Habitat: Quiet, shallow water 2-8 dm. deep,
Origin: Native
Flowers: July - August
Growth Duration: perennial
Schoenoplectus tabernaemontani – great bulrush, soft-stem bulrush
Distribution: Widespread in temperate North America; common throughout the Pacific Northwest, but less so than S. acutus.
Habitat: Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Widespread in temperate North America; common throughout the Pacific Northwest, but less so than S. acutus.
Habitat: Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Schoenoplectus triqueter – stream bank bulrush, triangular club-rush
Distribution: Occurring west of the Cascades crest in Washington in the lower Columbia River; southwestern Washington to adjacent northwestern Oregon.
Habitat: Freshwater intertidal zone.
Origin: Introduced from Eurasia
Flowers: July-September
Growth Duration: perennial
Distribution: Occurring west of the Cascades crest in Washington in the lower Columbia River; southwestern Washington to adjacent northwestern Oregon.
Habitat: Freshwater intertidal zone.
Origin: Introduced from Eurasia
Flowers: July-September
Growth Duration: perennial
Scirpus atrocinctus – common woolly sedge
Distribution: Known only from Whatcom County in Washington; British Columbia south to Washington, east across the northern half of North America to the Atlantic Coast.
Habitat: Wet, low ground.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Distribution: Known only from Whatcom County in Washington; British Columbia south to Washington, east across the northern half of North America to the Atlantic Coast.
Habitat: Wet, low ground.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Scirpus cyperinus – cottongrass bulrush
Distribution: Newfoundland south to Florida, occasionally west across southern Canada to southeast British Columbia and northern Washington.
Habitat: Wet, low ground.
Origin: Introduced
Flowers: July-August
Growth Duration: perennial
Distribution: Newfoundland south to Florida, occasionally west across southern Canada to southeast British Columbia and northern Washington.
Habitat: Wet, low ground.
Origin: Introduced
Flowers: July-August
Growth Duration: perennial
Scirpus microcarpus – panicled bulrush, small fruited bulrush
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east in Canada and northern United States to New England.
Habitat: Wet ground, ditches, shorelines, streambanks, and other riparian areas from low to moderate elevations in the mountains
Origin: Native
Flowers: June-August
Growth Duration: perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east in Canada and northern United States to New England.
Habitat: Wet ground, ditches, shorelines, streambanks, and other riparian areas from low to moderate elevations in the mountains
Origin: Native
Flowers: June-August
Growth Duration: perennial
Scirpus pallidus – pale bulrush
Distribution: Southest Washington and northeast Oregon, east to Utah, Minnisota and Texas.
Habitat: Wet, low ground, from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Distribution: Southest Washington and northeast Oregon, east to Utah, Minnisota and Texas.
Habitat: Wet, low ground, from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June - August
Growth Duration: perennial
Trichophorum cespitosum – tufted clubrush
Distribution: Circumboreal, extending south in North America chiefly west of the Cascades to central Oregon; also in North Carolina, Utah and Idaho.
Habitat: Sphagnum bogs, marshes, and other very wet places.
Origin: Native
Flowers: July - August
Growth Duration: perennial
Distribution: Circumboreal, extending south in North America chiefly west of the Cascades to central Oregon; also in North Carolina, Utah and Idaho.
Habitat: Sphagnum bogs, marshes, and other very wet places.
Origin: Native
Flowers: July - August
Growth Duration: perennial
