Flora of North America species comparison

mostly simple.

usually simple, sometimes branched distally.

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).

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.

campanulate to hemispheric.

narrowly turbinate.

5–12;

corollas yellow.

8–15;

corollas yellow.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

20–90;

corollas yellow;

anthers yellow.

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

8–20, lanceolate to oblanceolate.

1–6.

1 or 3–5(–9).

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

pappi 0.

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

= 38, 76.

= 38, 76.