Comprehensive Description
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anglais
)
fourni par North American Flora
Potentilla grayi S.Wats. Proc. Am. Acad. 8 : 560. 1873
Potentilla Clarkiana Kellogg, Proc. Calif. Acad. 7 : 94. 1876.
Somewhat tufted, perennial, with short caudex ; stems subscapose, 5-15 cm. high, minutely strigose or glabrous, few-dowered ; stipules ovate, acute, entire or often few-toothed ; leaves basal, pinnately 3-foliolate, with the middle leaflet long-petiolulate, sparingly hirsute or glabrate, shining ; leaflets 1-2 cm. long, very broadly obovate or sometimes nearly orbicular in outline, entire at the base, upwards coarsely 5-7-toothed, with the terminal tooth generally smaller ; flowers on slender pedicels, about 1 cm. in diameter ; hypanthium strigose in fruit, 7-8 mm. in diameter; bractlets ovate or oval, generally obtuse and only half as long as the ovate, usually acute sepals, which are about 5 mm. long ; petals orbicular or 'broadly ovate, slightly retuse, longer than the sepals; stamens about 20; pistils many ; styles filiform.
Type locality : Yosemite Valley.
Distribution : Mountains of California.
- citation bibliographique
- Per Axel Rydberg. 1908. ROSACEAE (pars). North American flora. vol 22(4). New York Botanical Garden, New York, NY
Potentilla grayi: Brief Summary
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anglais
)
fourni par wikipedia EN
Potentilla grayi is a species of cinquefoil known by the common name Gray's cinquefoil.
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