Distribution: Occurring west of the Cascades crest in Washington; Alaska to Washington.
Habitat: Damp slopes and rocky crevices at high elevations, blossoming as snow recedes.
Growth Duration: Perennial
Conservation Status: Threatened in Washington (WANHP)
Scapose perennial from a thick, fibrous root, glabrous throughout.
: Leaves all basal, the petioles up to 15 cm. long, the blades reniform, 1.5-4 cm. broad, deeply 3- to 5-lobed, the main segments overlapping, usually 2-3 lobed half their length and deeply round-toothed.
Scapes 1-flowered, naked or with a bract mid-length, 10-35 cm. tall; sepals 5, broadly ovate, 7-10 mm. long, glabrous; petals 7-12, yellow, slender, long-clawed, barely exceeding the sepals; nectary scale V-shaped, attached the entire length of the margins; stamens 75-125; pistils 70-100.
Achenes glabrous, 2.5 mm. long, elliptic in outline, stylar beak slightly hooked.
PNW Herbaria: Specimen records of Arcteranthis cooleyae in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Arcteranthis cooleyae checklist entry.
OregonFlora: Arcteranthis cooleyae information.
E-Flora BC: Arcteranthis cooleyae atlas page.
CalPhotos: Arcteranthis cooleyae photos.
USDA Plants: Arcteranthis cooleyae information.