Flora of North America species comparison

usually simple, sometimes branched.

(often 5–10 in dense clumps) 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).

2–3 pairs, mostly cauline (basal leaves often persistent on sterile rosettes, similar to cauline leaves);

petiolate (petioles narrowly to broadly winged, distal pair of leaves often reduced, connate-perfoliate);

blades ovate to ovate-lanceolate, 2–6 × 1–3 cm, margins irregularly serrate to subentire, apices acute, faces: abaxial glandular, adaxial stipitate-glandular.

broadly campanulate.

turbinate-campanulate.

6–13;

corollas yellow.

5–12;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

10–16, ovate-lanceolate.

1, or 3–5(–10).

(1–)5–15.

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

pappi white, bristles barbellate.

black, 4.5–7 mm, hairy (hairs duplex) and stipitate-glandular;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114.

= 57, 76.