Flora of North America species comparison

mostly simple.

mostly simple or distally branched.

3–8 pairs, mostly crowded toward bases; petiolate (at least proximal);

blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced).

3–7 pairs, sometimes crowded at stem bases (basal leaves often persistent on sterile rosettes); petiolate (petioles narrow, 1.5–8 cm, often broadly winged on distal reduced leaves);

blades usually ovate to broadly lanceolate, seldom subcordate, 2–12 × 1–7 cm, margins usually serrate to coarsely dentate or crenate, rarely subentire, faces glabrate to pilose, stipitate-glandular.

campanulate to hemispheric.

turbinate-campanulate.

5–12;

corollas yellow.

usually 0 (corollas of peripheral florets rarely dilated, resembling rays).

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

20–50;

corollas yellow;

anthers yellow.

5–12 (in 1 series), oblong or elliptic.

8–15, ovate-lanceolate to narrowly lanceolate.

1–6.

3–10(–30; erect).

brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular;

pappi 0.

dark gray, 6–8 mm, hirsute (hairs duplex) and stipitate-glandular;

pappi white, bristles usually barbellate, sometimes subplumose.

= 38, 76.

= 38, 57, 76.