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).

1–5 pairs, mostly cauline;

petiolate (petioles broadly to narrowly winged, shorter than blades);

blades broadly lanceolate to linear, 2–20 × 0.3–4 cm, margins entire or irregularly denticulate or dentate, apices acute or acuminate, faces glabrous or densely woolly-villous and stipitate-glandular.

broadly campanulate.

hemispheric.

6–13;

corollas yellow.

6–16;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

9–22, usually narrowly to broadly lanceolate, sometimes oblanceolate.

1, or 3–5(–10).

1–3(–5; erect).

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

pappi white, bristles barbellate.

brown, 3–8 mm, densely hirsute, rarely glandular;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114.