Page authors: Don Knoke, David Giblin
Potentilla breweri
Brewer's cinquefoil
WTU specimens
Other herbaria

Distribution: Mountains of central and southeast Oregon and northern California; occasional in the Wenatchee Mountains of Washington.

Habitat: Moist meadows and stream banks to open slopes, mid- to high elevations.

Flowers: June - August

Origin: Native

Conservation Status: Threatened in Washington (WANHP)

Description:
General:

Perennial from a sparingly branched crown and often a short rhizome, grayish-sericeous but not glandular, the stems 1-2.5 dm. tall.

Leaves:

Basal leaves pinnate, the leaflets 9-11, crowded, broadly obovate with a wedge-shaped base, 1-2 cm. long, cleft more that halfway to the midvein into linear divisions; stipules ovate, 0.5-1.5 cm. long; cauline leaves 2-3, greatly reduced.

Flowers:

Inflorescence an open, several-flowered cyme; calyx sericeous, cup-shaped, up to 1.5 cm. broad in fruit, the 5 lobes lanceolate, interspersed with 5 linear, smaller bracteoles; petals 5, yellow, obcordate, exceeding the sepals; stamens 20; pistils numerous; style slender, sub-apical.

Fruits:

Achene smooth, greenish, 1.3 mm. long.

Accepted Name:
Potentilla breweri S. Watson

Synonyms & Misapplications:
Potentilla breweri S. Watson var. expansa S. Watson
Potentilla drummondii Lehm. ssp. breweri (S. Watson) Ertter
Potentilla drummondii Lehm. var. breweri (S. Watson) N.H. Holmgren
Additional Resources:

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

WA Flora Checklist: Potentilla breweri checklist entry.

E-Flora BC: Potentilla breweri atlas page.

CalPhotos: Potentilla breweri photos.

USDA Plants: Potentilla breweri information.

8 photographs:
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