Comprehensive Description
provided by North American Flora
Sieversia canescens (Greene) Rydberg
Erythrocoma canescens Greene, Leaflets 1: 178. 1906.
Perennial, with a thick woody rootstock; stem 2-4 dm. high, seldom purple-tinged, finely pilose throughout, usually 3-flowered; basal leaves interruptedly pinnate, 8-15 cm. long; rachis hirsute; leaflets obovate-cuneate, 1-2.5 cm. long, densely pilose and ciliate on the margins and veins, 2-3-cleft and toothed or sometimes merely 3-5-toothed at the apex; bractlets oblong-linear or lanceolate, 6-8 mm. long; hypanthium hemispheric or sunken at the base; sepals broadly ovate-lanceolate or ovate, acute, about 1 cm. long; petals elliptic or ellipticobovate, slightly exceeding the sepals; plumose part of the styles, in fruit, 2.5-3 cm. long; naked portion 3 mm. long. (Scarcely distinct from the preceding.)
Type locality: Volcanic cone above Ebbet's Pass, northern vSierra Nevada, California. Distribution: Mountains of Washington, Idaho, Oregon, and California.
- bibliographic citation
- Per Axel Rydberg. 1913. ROSACEAE (pars). North American flora. vol 22(5). New York Botanical Garden, New York, NY