Page author: David Giblin
Potentilla flabellifolia
fan-leaf cinquefoil, fringe-leaf cinquefoil, fan-foil
WTU specimens
Other herbaria

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Montana and Wyoming.

Habitat: Common in moist meadows, mid- to high elevations in the mountains.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perennial from a branched base and well-developed rhizomes, moderately puberulent but green throughout, the stems 1.5-2.5 dm. tall.

Leaves:

Basal leaves numerous, long-petiolate, the blades ternate, the leaflets obovate, deeply toothed, the teeth rounded; stipules membranous, ovate, 5-15 mm. long; cauline leaves 1-2, reduced.

Flowers:

Inflorescence open, few-flowered, leafy-bracteate; calyx saucer-shaped, 1-1.5 cm. broad, the 5 lobes deltoid-lanceolate, the alternating bracteoles slightly shorter, elliptic, toothed; petals 5, bright yellow, obcordate, up to 10 mm. long; stamens 20, inserted just outside a blackish-purple disk; pistils numerous; style slender, sub-terminal, longer than the achene.

Fruits:

Achene 1.5 mm. long, smooth.

Accepted Name:
Potentilla flabellifolia Hook. ex Torr. & A. Gray
Publication: Fl. N. Amer. 1: 422. 1840.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Potentilla flabellifolia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Potentilla flabellifolia checklist entry.

E-Flora BC: Potentilla flabellifolia atlas page.

CalPhotos: Potentilla flabellifolia photos.

USDA Plants: Potentilla flabellifolia information.

42 photographs:
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