Coptis
goldthread
4 species
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Coptis aspleniifolia – fern-leaf goldthread
Distribution: Occurring west of the Cascades crest in Washington; Alaska south along the coast to Washington.
Habitat: Moist woods and bogs at low elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska south along the coast to Washington.
Habitat: Moist woods and bogs at low elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Coptis laciniata – Oregon goldthread
Distribution: Occurring west of the Cascades crest from the Olympic Peninsula south in Washington; Washington to California.
Habitat: Moist woods at low elevations.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest from the Olympic Peninsula south in Washington; Washington to California.
Habitat: Moist woods at low elevations.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Coptis occidentalis – Idaho goldthread, western goldthread
Distribution: Occurring east of the Cascades crest in the northeastern region of Washington; adjacent British Columbia to Idaho and Montana.
Habitat: Moist woods.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in the northeastern region of Washington; adjacent British Columbia to Idaho and Montana.
Habitat: Moist woods.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Coptis trifolia – threeleaf goldthread
Distribution: Occurring west of the Cascades crest in Washington in the northwest corner of the Olympic Peninsula. Alaska to Washington, Idaho and Montana, east across northern North America to the Atlantic; disjunct in Clackamas County, Oregon; also in Greenland and eastern Eurasia.
Habitat: Deep woodland, often where swampy.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington in the northwest corner of the Olympic Peninsula. Alaska to Washington, Idaho and Montana, east across northern North America to the Atlantic; disjunct in Clackamas County, Oregon; also in Greenland and eastern Eurasia.
Habitat: Deep woodland, often where swampy.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
