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FNA | Family List | FNA Vol. 8 | Saxifragaceae | Micranthes

22. Micranthes rufidula Small in N. L. Britton et al., N. Amer. Fl. 22: 140. 1905.

Saxifraga aequidentata (Small) Rosendahl; S. occidentalis S. Watson subsp. rufidula (Small) Bacigalupi; S. occidentalis var. rufidula (Small) C. L. Hitchcock; S. rufidula (Small) Fedde

Plants solitary or in groups, with bulbils on caudices, or rhizomatous. Leaves basal; petiole flattened, 4-8 cm; blade ovate to elliptic, 1-4 cm, fleshy, base attenuate to ± truncate, margins serrate (15-30- toothed), eciliate, surfaces densely tangled, reddish brown-hairy abaxially, glabrous adaxially. Inflorescences 15+-flowered, open, flat-topped thyrses, 5-20 cm, purple-tipped stipitate-glandular; (bracts often tangled brown-hairy). Flowers: sepals spreading, ovate, (often tangled brown-hairy); petals white, not spotted, ovate to elliptic, clawed, 2-4 mm, longer than sepals; filaments linear, flattened to slightly club-shaped; pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). Capsules greenish to reddish purple, folliclelike. 2n = 20, 38, 56, 58.

Flowering late winter-summer. Wet to dry, rocky ledges; 0-3000 m; B.C; Calif., Oreg., Wash.


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