Eriophorum
bog cotton, cotton-grass
5 species
1 subspecies and varieties
1 subspecies and varieties
Show only taxa with photos
Order by:
Scientific name
Common name
Display as:
Eriophorum angustifolium – many-spiked bog cotton, many-spiked cotton-grass
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to the Rocky Mountains, Great Plains, Great Lakes region, and eastern North America.
Habitat: Cold swamps and bogs at middle to high elevations in the mountains.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to the Rocky Mountains, Great Plains, Great Lakes region, and eastern North America.
Habitat: Cold swamps and bogs at middle 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 cotton-grass
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 cotton-grass
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Wet places, middle to high elevation in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Wet places, middle to high elevation in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Eriophorum virginicum – tawny cotton-grass
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to northwestern Washington; native to eastern North America.
Habitat: Peatlands and cranberry farms.
Origin: Introduced from eastern North America
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to northwestern Washington; native to eastern North America.
Habitat: Peatlands and cranberry farms.
Origin: Introduced from eastern North America
Flowers: May-August
Growth Duration: Perennial
Eriophorum viridicarinatum – tassel cotton-grass
Distribution: Occurring east of the Cascades crest in northeastern Washington; Alaska to northeastern Washington, Idaho, western Montana, Wyoming, and Colorado, east across the northern Great Plains to the Great Lakes, and northeastern North America.
Habitat: Cold swamps and peatlands in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in northeastern Washington; Alaska to northeastern Washington, Idaho, western Montana, Wyoming, and Colorado, east across the northern Great Plains to the Great Lakes, and northeastern North America.
Habitat: Cold swamps and peatlands in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
