Potentilla rivalis Nutt.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Rosaceae
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Scientific Name
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Description
Species Description - Mostly annual or biennial, freely branched, ascending to erect, 4–8 dm, glabrate to softly pubescent, with a diffusely branched leafy infl; lfls 3–5, pinnate or palmate, narrowly obovate-oblong, 2–5 cm, usually blunt, strongly toothed; fls 4–5 mm wide; bractlets and sep subequal, twice as long as the pale yellow pet; stamens 5 or 10; anthers 0.2 mm; style terminal; achenes smooth, 0.7 mm. Streambanks and damp soil; Minn. to Ill., w. to B.C. and Calif., occasionally adventive further e. Summer. (P. millegrana; P. pentandra)
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Common Names
brook-five-fingers