Flora of North America species comparison

solitary to densely clumped, simple or branched among heads.

usually simple, rarely branched.

4–8(–10) pairs, mostly cauline; usually sessile (sometimes with partly connate-sheathing bases), sometimes petiolate (proximalmost);

blades lance-elliptic, lanceolate, oblanceolate, obovate, or ovate, 4–12(–20) × (1–)2–6(–8) cm, margins subentire to dentate-serrate, apices usually acute, rarely obtuse, faces glabrate to pilose.

1–4 pairs, mostly cauline; petiolate;

blades elliptic, lanceolate, oblanceolate, ovate, or spatulate, 1.2–10 × 0.5–3.5 cm, margins usually denticulate to dentate, rarely entire, apices acute to obtuse or abruptly pointed, faces usually glabrous or sparingly hispidulous-puberulent, rarely stipitate-glandular.

narrowly campanulate to turbinate.

hemispheric to campanulate-turbinate (bases sparsely to densely pilose, hairs white or yellow).

(5–)7–17(–20);

corollas yellow.

6–17;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

8–15(–19), narrowly to broadly lanceolate.

9–20, lanceolate to oblanceolate, not stipitate-glandular.

(1–)3–10(–20).

usually 1, sometimes 2–3 (erect or nodding).

brown, 4–8 mm, sparsely hirsutulous, stipitate-glandular;

pappi tawny, bristles subplumose.

brown, 2.5–6 mm, abaxially glabrous, adaxially sparsely hirsute or glabrous throughout, rarely glandular;

pappi white, bristles barbellate.