General: Annual to biennial herb from a taproot; stems slender, spreading to ascending, 10-50 cm long/tall, freely branched, leafy, finely spreading- to appressed-hairy or woolly.
Leaves: Basal leaves few, stalked, palmately compound; leaflets 5, oval to lance-oblong, 1-5 cm long, coarse-toothed, fine-hairy; stem leaves alternate, several, the lower similar to the basal but the upper usually with 3 leaflets.
Flowers: Inflorescence a spreading, leafy-bracted, terminal cluster of many stalked flowers; corollas yellow, cup-shaped, the petals 5, spoon-shaped, about 2 mm long, about 1/2 the length of the calyx-lobes; calyces soft-hairy, 5-lobed, the lobes triangular-egg-shaped, alternating with 5 longer narrower bractlets; ovaries superior, the styles thickened at the base; stamens 5-15.
Fruits: Achenes, numerous, clustered, lopsided-egg-shaped, about 0.7 mm long, yellowish-brown, smooth or slightly wrinkled.
Moist to wet meadows, streambanks, lakeshores, ditches and edges of wetlands in the lowland and montane zones; infrequent in S BC east of the Coast-Cascade Mountains, rare in SW BC (where introduced); E to SK and S to MN, MO, NM and CA.
Potentilla leucocarpa Rydb. Potentilla millegrana Engelm. ex Lehm. Potentilla pentandra Engelm. Potentilla rivalis var. millegrana (Engelm. ex Lehm.) S. Wats. Potentilla rivalis var. pentandra (Engelm.) S. Wats. Potentilla rivalis var. rivalis Nutt. [superfluous autonym]
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
2020-10-25 10:01:57 PM
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