Flora of North America species comparison

usually simple, sometimes branched.

simple.

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, nearly all basal;

sessile;

blades (with 3, 5, or 7 prominent, subparallel veins) broadly elliptic, ovate, or rhombic, 4–15 × 1.5–8 cm, margins mostly entire, apices mostly obtuse, faces hirsute and stipitate-glandular (cauline leaves 0 or 1–2, distalmost often alternate, much reduced).

broadly campanulate.

campanulate.

6–13;

corollas yellow.

10–16;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

12–18, narrowly ovate.

1, or 3–5(–10).

3–20.

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

pappi white, bristles barbellate.

dark gray to dark brown, 5–7 mm, glabrous or sparsely stipitate-glandular;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114.

= 38.