Arnica cernua Howell

Arnica cernua Howell, Fl. N. W. Am. 373. 1900
Rootstock slender; stem 3-4 dm. high, sulcate, sparingly puberulent below, densely so and glandular-granuliferous on the upper part of the peduncles; petioles of the leaves of the offsets about 3 cm. long; blades elliptic or oval, 2.5-3 cm. long, 1-3 cm. wide, entire, sparingly puberulent; basal leaves short-petioled; blades 1.5-3.5 cm. long, oval, obtusely dentate, puberulent; stem-leaves 2 or 3 pairs, the lower similar to the basal leaves but often with larger blades, the middle ones with wing-margined petioles, the uppermost sessile, lanceolate, entiremargined; heads usually solitary; involucre round-campanulate, 13 mm. high, 15 mm. broad, short-villous and glandular-puberulent ; bracts about 10, linear or lanceolate, acutish or obtuse, ray-flowers about 10, the ligules about 15 mm. long and 5 mm. broad; tube of the disk-corollas 4 mm. long, the throat 5 mm. long, the lobes ovate; achenes 8-9 mm. long, sparingly hirsute; pappus-bristles white, 8 mm. long, barbellate.
Type locality: Coast Range, near Waldo, Oregon. Distribution: Southwestern Oregon.

Arnica chandleri Rydberg, sp. now
Rootstock slender; stem 1.5-2 dm. high, slender, purplish, sparingly villous; petioles of
the basal leaves 1-3 cm. long; blades rounded-obovate, coarsely dentate, 5-ribbed, thick,
glabrous beneath, sparingly villous or glabrate above, villous-ciliate on the wing-margined
petioles; stem-leaves 2 or 3 pairs, the lowest pair petioled, the blades ovate, about 3 cm. long,
dentate, the upper 1 or 2 reduced, sessile, oblanceolate or linear; heads solitary; peduncle 3-4
cm. long; involucre turbinate, about 1 cm. high and 12 mm. broad, villous and glandular-
puberulent; bracts about 10, oblong-lanceolate, acute; ray-flowers 8-10, the ligules orange,
about 12 mm. long and 3 mm. broad, deeply 3-toothed; disk-flowers 7-8 mm. long; lobes ovate;
achenes 5 mm. long, hirsute; pappus-bristles white, 7 mm. long, barbellate.
Tvpe collected on the Hupi Indian Reservation, California, June 1901, H. P. Chandler 1298 (herb. N. Y. Bot. Gard.).