Flora of North America species comparison

usually simple, sometimes branched.

usually branched from mid heights or 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).

4–10 pairs, mostly cauline (evenly distributed; basal leaves often withered by flowering, 1–2 pairs, subsessile to short-petiolate);

sessile (proximalmost with membranous connate-sheathing bases);

blades lance-elliptic, broadly oblanceolate, or oblong, 5–20 × 2–6(–8) cm, margins entire or remotely denticulate to prominently dentate, apices acute, faces nearly glabrous or puberulent to sparsely or densely white-tomentose-pilose.

broadly campanulate.

campanulate (rarely hemispheric).

6–13;

corollas yellow.

8–20;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

10–20, narrowly ovate to lanceolate.

8–23, nearly linear to narrowly lanceolate (apices each with conspicuous tuft of white hairs).

1, or 3–5(–10).

(1–)3–10(–16).

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

pappi white, bristles barbellate.

gray to brown, 3–8 mm, subglabrous to sparsely hirsutulous, stipitate-glandular;

pappi stramineous, bristles barbellate to subplumose.

= 38, 57, 76, 95, 114.

= 38, 57, 76.