Flora of North America species comparison

usually simple, sometimes branched distally.

simple or branched.

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.

3–5 pairs, sometimes crowded toward bases (basal leaves often persistent on sterile rosettes); petiolate (petioles mostly broadly winged, 1–9 × 0.2–1.5 cm);

blades elliptic-ovate to spatulate, 2–8 × 1–4 cm, margins subentire to mostly irregularly dentate, apices acute, faces sparsely to densely villous, stipitate-glandular.

narrowly turbinate.

turbinate-campanulate.

8–15;

corollas yellow.

0.

20–90;

corollas yellow;

anthers yellow.

15–50;

corollas yellow;

anthers yellow.

8–20, lanceolate to oblanceolate.

8–15, broadly to narrowly lanceolate.

1 or 3–5(–9).

1, or 3–9(–25).

dark brown, 5–9 mm, sparsely villous;

pappi white, bristles barbellate.

black, 5–10 mm, sparsely stipitate-glandular;

pappi white, bristles barbellate.

= 38, 76.

= 38, 76.