Flora of North America species comparison

mostly simple.

usually simple, sometimes branched.

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, mostly cauline (basal often persistent on sterile rosettes); petiolate;

blades cordate or subcordate to ovate, 3–10 × 2–10 cm, margins dentate to coarsely dentate, apices acute to rounded, faces puberulent to sparsely villous, sometimes stipitate-glandular (especially adaxial).

campanulate to hemispheric.

broadly campanulate.

5–12;

corollas yellow.

6–13;

corollas yellow.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers yellow.

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

10–20, narrowly ovate to lanceolate.

1–6.

1, or 3–5(–10).

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

pappi 0.

dark gray, 5–10 mm, sparsely to densely hirsute (hairs duplex), sometimes stipitate-glandular as well;

pappi white, bristles barbellate.

= 38, 76.

= 38, 57, 76, 95, 114.