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.

1–5 pairs, mostly cauline; petiolate (petioles broadly to narrowly winged, shorter than blades);

blades broadly lanceolate to linear, 2–20 × 0.3–4 cm, margins entire or irregularly denticulate or dentate, apices acute or acuminate, faces glabrous or densely woolly-villous and stipitate-glandular.

narrowly turbinate.

hemispheric.

8–15;

corollas yellow.

6–16;

corollas yellow.

20–90;

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

8–20, lanceolate to oblanceolate.

9–22, usually narrowly to broadly lanceolate, sometimes oblanceolate.

1 or 3–5(–9).

1–3(–5; erect).

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

brown, 3–8 mm, densely hirsute, rarely glandular;

pappi white, bristles barbellate.

= 38, 76.