Flora of North America species comparison

usually simple, sometimes branched distally.

usually branched from mid heights or distally.

2–4(–6) pairs, cauline (basal leaves often persistent on sterile rosettes), petiolate (proximal, petioles relatively short, broadly winged) or sessile (mid and distal);

blades lance-elliptic to ovate, 2–10 × 1–6 cm, margins serrate to dentate, apices obtuse to acute, faces glabrous or sparsely villous.

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.

narrowly turbinate.

campanulate (rarely hemispheric).

8–15;

corollas yellow.

8–20;

corollas yellow.

20–90;

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

8–20, lanceolate to oblanceolate.

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

1 or 3–5(–9).

(1–)3–10(–16).

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

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

pappi stramineous, bristles barbellate to subplumose.

= 38, 76.

= 38, 57, 76.