Arnica macounii

Arnica macounii Greene, Pittonia 4: 160. 1900 Rootstock branched; tem4 7 dm high, striate, moi lubescent below, with white
flat hairs, glandiilar-puUrulcnt in tininll lower leavi oblanceolate, '■ 12 < in long, 1-3 cm. wide, dentate, with short mueronate teeth, acute at the apex, tapering at the base, usually short-petioled, and the petioles connate-clasping at the base, ciliolate on the margins, sparingly hairy on both sides or glabrate, the upper leaves narrowly lanceolate or lance-linear, sessile, often somewhat glandular-granuliferous, those of the inflorescence almost linear and reduced; heads 3-9; peduncles 5-8 cm. long; involucre hemispheric, about 12 mm. high, 15-20 mm. broad, sparingly hirsute and glandular-granuliferous; bracts 15-18, linear or lancelinear, attenuate; ray-flowers 10-15, the ligules about 15 mm. long and 3 mm. wide, moderately 2or 3-toothed; disk-corollas 7 mm. long; achenes 5 mm. long, angled, sparingly hirsute; pappus light-brown, short-plumose, 7 mm. long.
Type locality: Comas, Vancouver Island.
Distribution: Alberta and British Columbia to Western Montana and Washington.