Flora of North America species comparison

usually simple, sometimes branched.

usually simple, rarely branched.

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).

1–4 pairs, mostly cauline;

petiolate;

blades elliptic, lanceolate, oblanceolate, ovate, or spatulate, 1.2–10 × 0.5–3.5 cm, margins usually denticulate to dentate, rarely entire, apices acute to obtuse or abruptly pointed, faces usually glabrous or sparingly hispidulous-puberulent, rarely stipitate-glandular.

broadly campanulate.

hemispheric to campanulate-turbinate (bases sparsely to densely pilose, hairs white or yellow).

6–13;

corollas yellow.

6–17;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

9–20, lanceolate to oblanceolate, not stipitate-glandular.

1, or 3–5(–10).

usually 1, sometimes 2–3 (erect or nodding).

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

pappi white, bristles barbellate.

brown, 2.5–6 mm, abaxially glabrous, adaxially sparsely hirsute or glabrous throughout, rarely glandular;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114.