Flora of North America species comparison

usually simple, sometimes branched.

mostly simple or distally 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).

3–7 pairs, sometimes crowded at stem bases (basal leaves often persistent on sterile rosettes);

petiolate (petioles narrow, 1.5–8 cm, often broadly winged on distal reduced leaves);

blades usually ovate to broadly lanceolate, seldom subcordate, 2–12 × 1–7 cm, margins usually serrate to coarsely dentate or crenate, rarely subentire, faces glabrate to pilose, stipitate-glandular.

broadly campanulate.

turbinate-campanulate.

6–13;

corollas yellow.

usually 0 (corollas of peripheral florets rarely dilated, resembling rays).

corollas yellow;

anthers yellow.

20–50;

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

8–15, ovate-lanceolate to narrowly lanceolate.

1, or 3–5(–10).

3–10(–30; erect).

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

pappi white, bristles barbellate.

dark gray, 6–8 mm, hirsute (hairs duplex) and stipitate-glandular;

pappi white, bristles usually barbellate, sometimes subplumose.

= 38, 57, 76, 95, 114.

= 38, 57, 76.