dcsimg

Comprehensive Description

provided by North American Flora
Potentilla ambigens Greene, Erythea 1 : 5. 1893
Perennial, with a thick woody tap-root ; stem stout, 6-7 dm. high, more or less striate, densely silky-villous with long spreading hairs, branched above ; stipules large, those of the basal leaves ovate-oblong, subentire, 2-4 cm. long, more or less membranous and brownish, those of the stem ovate, acuminate, green, and more or less toothed with lanceolate teeth ; basal leaves with petioles 10-20 cm. long, irregularly pinnate, silky-villous beneath, especially on the rachis and the veins, slightly tomentulose when young, more glabrous above ; leaflets 9-15, obovate-oblong, 3-6 cm. long, coarsely serrate, more or less decurrent on the rachis, especially the uppermost, which often are confluent ; stem-leaves similar but short-petioled and with fewer leaflets ; bractlets lanceolate, equaling or sometimes even exceeding the sepals, which are lanceolate, acute, 6-7 mm. long ; petals about 8 mm. long, obcordate,. about a fourth longer than the sepals ; stamens 25 ; pistils many; styles filiform.
Type locality : Bear Creek, above Morrison, Colorado. Distribution : Mountains from New Mexico to Wyoming.
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bibliographic citation
Per Axel Rydberg. 1908. ROSACEAE (pars). North American flora. vol 22(4). New York Botanical Garden, New York, NY
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