UW Burke Herbarium species comparison

Cauline leaves 5-12 pairs, not much reduced upward, narrowly lance-elliptic or lance-ovate, sessile, more or less toothed, 5-12 cm. long and 1.2-6 cm. wide.

Long-petiolate, cordate basal leaves commonly on separate short shoots;

cauline leaves 2-4 pairs, petiolate, reduced upward, the more or less cordate blade 4-12 cm. long and 3-9 cm. wide, usually toothed.

Heads several;

involucre 9-15 mm. high, its bracts sharply pointed;

rays 8-14, pale yellow, 1-2 cm. long;

pappus tawny, sub-plumose.

Heads 1-3, rarely more, often single;

involucre 13-20 mm. high, covered with long, spreading, white hairs, and usually glandular as well;

rays 10-15, 1.5-3 cm. long, yellow;

pappus white, barbellate.

Achenes sparsely hirsute and sometimes glandular.

Achenes uniformly short-hairy or glandular or both.