Arnica confinis

Arnica confinis Greene, Ottawa Xat. IS: 281. 1902
Rootstock branched; stem 2-3 dm. high, striate, crisp-villous, more or less glandular above; leaves of the offsets oblanceolate, 3-S cm. long, denticulate, acute at the apex, tapering below into a short, winged petiole, yellowish-green, thick, more or less villous, conspicuously glandular-granuliferous ; stem-leaves 3 or 4 pairs, the lower oblanceolate, sub-sessile, the upper lanceolate or ovate, acuminate, 3-5 cm. long, sharply dentate; heads 1-3; peduncles 2-5 cm. long, sparingly villous and densely glandular-granuliferous; involucre hemispheric, 10-12 mm. high, 12—15 mm. broad, villous and glandular-puberulent ; bracts about 15, lance-linear, acuminate; ray-flowers 12, the ligules 12-15 mm. long, 5-6 mm. wide, deeply 3-toothed; diskcorollas 5 mm. long; achenes sparingly hirsute and glandular-granuliferous, 5 mm. long; pappus-bristles brown, short-plumose, 6 mm. long.
Type locality: Chilliwack Valley, British Columbia. Distribution: Alaska to Washington.