– mountain mare's-tail
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Washington, east to Northwest Territories and Alberta.
Habitat: Wet meadows, streams and mossy banks in the moungtains
Origin: Native
Flowers: July-September
Growth Duration: Perennial
– common mare's-tail
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountain, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Streams, ponds and shallow lakes, generally at least partially emerged.
Origin: Native
Flowers: June-August
Growth Duration: Perennial