Page authors: David Giblin, Don Knoke
Micranthes occidentalis
mountain saxifrage, redwool saxifrage, western saxifrage

Distribution: Both sides of the Cascades in Washington; Alaska south to Oregon and Nevada, east to Saskatachewan and south to New Mexico.

Habitat: Dry to wet open areas, rock crevices, meadows, and streambanks from moderate to high elevations in the mountains.

Flowers: May-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies, beetles, wasps


Herbaceous perennial from short, horizontal rhizomes, the 1-3 leafless, pubescent stems 1-2.5 dm. tall.


Leaves basal, the blades elliptic, up to 6 cm. long and 3 cm. wide, with 15-30 rounded teeth; petioles slightly winged, 1-3 times as long as the blades.


: Inflorescence pyramidal, somewhat compact, up to 10 cm. long, the branches ascending; calyx divided about half its length, the 5 ovate lobes 1-2.5 mm. long; petals 5, white, broadly elliptic, 1.5-3 mm. long; stamens 10, the filaments club-shaped; ovary less than 1/3 inferior


Follicles greenish

Accepted Name:
Micranthes occidentalis (S. Watson) Small
Publication: N. Amer. Fl. 22: 144. 1905. 1905.

Synonyms & Misapplications:
Micranthes lata Small
Micranthes saximontana (E.E. Nelson) Small
Saxifraga occidentalis S. Watson [HC]
Saxifraga occidentalis S. Watson var. allenii (Small) C.L. Hitchc. [HC]
Saxifraga occidentalis S. Watson var. occidentalis [HC]
Saxifraga occidentalis S. Watson var. wallowensis M. Peck
Saxifraga reflexa Hook. ssp. occidentalis (S. Watson) Hultén
Additional Resources:

PNW Herbaria: Specimen records of Micranthes occidentalis in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Micranthes occidentalis checklist entry

OregonFlora: Micranthes occidentalis information

E-Flora BC: Micranthes occidentalis atlas page

CalPhotos: Micranthes occidentalis photos

58 photographs:
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