Flora of North America species comparison

usually simple, sometimes branched distally.

mostly simple.

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.

3–8 pairs, mostly crowded toward bases; petiolate (at least proximal);

blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced).

narrowly turbinate.

campanulate to hemispheric.

8–15;

corollas yellow.

5–12;

corollas yellow.

20–90;

corollas yellow;

anthers yellow.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

8–20, lanceolate to oblanceolate.

5–12 (in 1 series), oblong or elliptic.

1 or 3–5(–9).

1–6.

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular;

pappi 0.

= 38, 76.

= 38, 76.