Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon, also in eastern North America.
Habitat: Disturbed areas generally at low elevations, often where seasonally moist in the spring.
Origin: Introduced from Europe
Conservation Status: Not of concern
Glabrous, herbaceous perennials from tuberous roots, the stems decumbent or erect, not rooting nodally; bulbils sometimes formed in leaf axils.
Leaves alternate, the basal simple and undivided, the blades cordate, deltate or semi-circular, 1.8-3.7 cm. long and 2-4 cm. wide, glabrous, the margins entire or wavy, the tips obtuse.
Flowers solitary on long peduncles; sepals green, spreading, saccate at the base, 4-9 mm. long and 3-6 mm. wide, glabrous; petals yellow, 10-15 mm. long and 3-7 mm. wide; heads of achenes hemispheric, 4-5 mm. tall and 6-8 mm. wide; stamens numerous.
Achenes about 2.7 mm. long, pubescent, without a beak.