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Potentilla elmer

Comprehensive Description

provided by North American Flora
Potentilla elmer i Rydberg, sp. no v
Perennial, with a short, cespitose caudex ; stem ascending or decumbent at the base, 2-4 dm. high, appressed-silky ; basal leaves and rarely the lower cauline ones digitately 7-foliolate; petioles 3-10 cm. long, appressed-silky; leaflets 2-3 cm. long, oblanceolate, deeply dissected into oblong divisions, sparingly appressed-silky above, densely so beneath; middle and upper stem-leaves reduced, 3-5-foliolate ; inflorescence open ; hypanthium silkyhirsute, in fruit 7 mm. broad ; bractlets linear-lanceolate, 3 mm. long ; sepals ovate-lanceolate, short-acuminate, 5-6 mm. long; petals obcordate, about 6 mm. long; stamens 20; pistils many ; styles filiform.
Type collected in Ventura County, California, in 1902, A. D. E. Elmer 4009 (herb. N. Y.
Bot. Gard.). .
Distribution : Type locality and near Donner i^ake.
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cc-by-nc-sa-3.0
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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