Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Sandy or gravely soil, typically where disturbed.
Origin: Introduced from Eurasia
Conservation Status: Not of concern
Herbaceous perennial from a woody base, the numerous stems 1.5-3 dm. tall, covered with a gray pubescence.
Leaves mainly cauline, 5-10 per stem, palmately divided, the leaflets 5, 1-2 cm. long, oblanceolate, with coarse serrate teeth over half way to the mid-vein; stipules lanceolate, entire, 4-8 mm. long.
Inflorescence open, branched, many-flowered, leafy-bracteate; calyx 4-6 mm. broad, silky, the 5 lobes ovate-lanceolate, 2-3 mm. long, alternating with linear, shorter bracteoles; petals 5, yellow, obovate with a wedge-shaped base, equaling the sepals; stamens 20; pistils numerous, the styles thickened and glandular at the base, tapered upward, attached to the end of the achene.
Achene 0.6-0.8 mm. long, the same length as the style.