An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 n. Five-stamened Cinquefoil. Mg. 2235. Engelm.; T. &; G. Fl. N. A. i ; 447- 1840. Potentilla rivalis var. pentandra S. Wats. Proc. Am. Acad. 8: 553. 1873. Similar to the preceding species, erect, hirsute, i°-4° high, simple at the base, much branched above. Stipules lanceolate, somewhat foliaceous, denta
An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 n. Five-stamened Cinquefoil. Mg. 2235. Engelm.; T. &; G. Fl. N. A. i ; 447- 1840. Potentilla rivalis var. pentandra S. Wats. Proc. Am. Acad. 8: 553. 1873. Similar to the preceding species, erect, hirsute, i°-4° high, simple at the base, much branched above. Stipules lanceolate, somewhat foliaceous, dentate or entire; basal and lower leaves slender-petiolef^. 3-fo!iolate, with the lower pair of leaflets parted nearly to the base, so as to appear 4- or 5-f oliolate; leaflets oblanceolate or oblong, obtuse at the apex, narrowed or cuneate at the base, incised-dentate. g'.abrous or sparingly pubescent above, quite pubes- cent beneath, 1-2' long; flowers terminah in a more or less flat-topped cyme, pale yellow, 2'-4' broad; calyx-lobes ovate, acute, exceeding the small spatu- late petals, and equalling or slightly shorter than the lanceolate bractlets; stamens 5-8; style thickened below; achenes glabrous. In sandy soil. Manitoba to Alberta. Missouri, Ne- braska and Arkansas. June-Sept. 10. Potentilla argentea L. Silvery or Hoary Cinquefoil. Fig. 2236. Potentilla argentea L. Sp. PI. 497. 1753. Stems ascending, tufted, branched, slightly woody at the base, 4'-i2' long, white woolly-pubescent. Stipules lanceolate, acuminate; leaves all but the uppermost petioled, digitately 5-foliolate; leaflets oblanceolate or obovate, obtuse at the apex, cuneate at the base, green and glabrous above, white-tomentose beneath, laciniate or incised and with revolute margins, 6'-i2' long; flowers cymose, terminal, pedicelled, yellow, 2'-4' broad; calyx-lobes ovate, acutish, a little shorter than the obovate retuse petals; stamens about 20; style fili- form; achenes glabrous. In dry soil. Nova Scotia a
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