Flora of North America species comparison

mostly simple.

simple or branched (prominently ribbed; caudices woody).

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).

6–10 pairs, cauline (basal leaves withered by flowering; proximal cauline scalelike, middle leaves largest, distal reduced, bractlike) usually broadly sessile, rarely broadly petiolate;

blades (3- or 5-nerved, strongly reticulate-veined) ovate-elliptic to broadly lanceolate, 3–7 × 1.5–4 cm (firm), margins irregularly and coarsely serrate, apices acute to obtuse, faces: abaxial pilose, stipitate-glandular (especially on veins), adaxial glabrate to stipitate-glandular.

campanulate to hemispheric.

turbinate-campanulate.

5–12;

corollas yellow.

0.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

30–60;

corollas yellow;

anthers yellow.

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

8–19, ovate to broadly lanceolate.

1–6.

1.

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, densely hirsute (hairs duplex);

pappi white, bristles barbellate.

= 38, 76.

= 38.