Flora of North America species comparison

usually simple, sometimes branched distally.

solitary to densely clumped, simple or branched among heads.

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.

4–8(–10) pairs, mostly cauline; usually sessile (sometimes with partly connate-sheathing bases), sometimes petiolate (proximalmost);

blades lance-elliptic, lanceolate, oblanceolate, obovate, or ovate, 4–12(–20) × (1–)2–6(–8) cm, margins subentire to dentate-serrate, apices usually acute, rarely obtuse, faces glabrate to pilose.

narrowly turbinate.

narrowly campanulate to turbinate.

8–15;

corollas yellow.

(5–)7–17(–20);

corollas yellow.

20–90;

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

8–20, lanceolate to oblanceolate.

8–15(–19), narrowly to broadly lanceolate.

1 or 3–5(–9).

(1–)3–10(–20).

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

brown, 4–8 mm, sparsely hirsutulous, stipitate-glandular;

pappi tawny, bristles subplumose.

= 38, 76.