Flora of North America species comparison

usually simple, sometimes branched.

usually simple, sometimes branched distally.

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).

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.

broadly campanulate.

narrowly turbinate.

6–13;

corollas yellow.

8–15;

corollas yellow.

corollas yellow;

anthers yellow.

20–90;

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

8–20, lanceolate to oblanceolate.

1, or 3–5(–10).

1 or 3–5(–9).

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

pappi white, bristles barbellate.

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114.

= 38, 76.