Micranthes lyallii (Engl.) Small

Micranthes lyallii (Engler) Small
Saxifraga Lj/allii :EngleT, Verh. Zool.-Bot. Ges. Wien 19: 542. 1869. Saxifraga dahurica I^yall ; Engler, Monogr. Saxifr. 141, as synonym. 1872. Saxifraga Lyallii laxa Bngler, Monogr. Saxifr. 142. 1872.
Leaves erect or ascending, 1.5-6.5 cm. long, the blades flabellate, varying to suborbicular or reni form -flabellate, typically cuneate at the base, coarsely few-toothed above, with the teeth mainly directed forward, glabrous or nearly so, the petiole-like bases often longer than the blade ; scapes 8-36 cm. tall, glabrous or nearly so, sparingly branched above ; cymules very few-flowered, or flowers solitary, the peduncles and pedicels very slender, commonly purple; sepals ovate to oblong-ovate, 1.5-3 mm. long, glabrous or nearly so, reflexed ; petals white with 2 yellow blotches below the middle, 3^.5 mm. long, broadly oblong to suborbicular above the short claw, often slightly notched at the apex ; filaments clavate ; follicles 9-12 mm, high, often purple or purple-tinged, commonly 3-5 together .
Type locality : Rocky Mountains of North America about 49° latitude.
Distribution: Alaska and the Bering Sea region to Alberta, British Columbia and Montana.