Flora of North America species comparison

mostly simple.

simple (sparsely to moderately hairy, hairs translucent with purple septa).

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).

2–5 pairs, mostly cauline; petiolate (proximal) or sessile;

blades elliptic-oblanceolate, obovate or spatulate, (3–)5–12 × 1.5–3 cm, margins usually entire proximal to mid blade, serrate to dentate distally, apices acute to obtuse or abruptly pointed, faces usually glabrate, sometimes scabrous to sparsely stipitate-glandular.

campanulate to hemispheric.

hemispheric or turbinate-hemispheric (bases moderately villous).

5–12;

corollas yellow.

6–17;

corollas yellow (laminae 12–17 mm).

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers dark purple.

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

14–24, lanceolate (apices obtuse, tips blunt, callous).

1–6.

1 (erect).

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

pappi 0.

brown, 4–5 mm, shortly hispidulous (hairs duplex, apically forked) and stipitate-glandular;

pappi tawny, bristles subplumose.

= 38, 76.

= 38.