Flora of North America species comparison

mostly simple.

usually branched from mid heights or distally.

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).

4–10 pairs, mostly cauline (evenly distributed; basal leaves often withered by flowering, 1–2 pairs, subsessile to short-petiolate);

sessile (proximalmost with membranous connate-sheathing bases);

blades lance-elliptic, broadly oblanceolate, or oblong, 5–20 × 2–6(–8) cm, margins entire or remotely denticulate to prominently dentate, apices acute, faces nearly glabrous or puberulent to sparsely or densely white-tomentose-pilose.

campanulate to hemispheric.

campanulate (rarely hemispheric).

5–12;

corollas yellow.

8–20;

corollas yellow.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers yellow.

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

8–23, nearly linear to narrowly lanceolate (apices each with conspicuous tuft of white hairs).

1–6.

(1–)3–10(–16).

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

pappi 0.

gray to brown, 3–8 mm, subglabrous to sparsely hirsutulous, stipitate-glandular;

pappi stramineous, bristles barbellate to subplumose.

= 38, 76.

= 38, 57, 76.