Flora of North America species comparison

usually simple, sometimes branched distally.

usually simple, rarely branched.

2–4(–6) pairs, cauline (basal leaves often persistent on sterile rosettes), petiolate (proximal, petioles relatively short, broadly winged) or sessile (mid and distal);

blades lance-elliptic to ovate, 2–10 × 1–6 cm, margins serrate to dentate, apices obtuse to acute, faces glabrous or sparsely villous.

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 turbinate.

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

8–15;

corollas yellow.

6–17;

corollas yellow.

20–90;

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

8–20, lanceolate to oblanceolate.

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

1 or 3–5(–9).

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

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

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

pappi white, bristles barbellate.

= 38, 76.