Flora of North America species comparison

mostly simple.

(forming clumps) simple or branched among heads.

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).

2–3(–4) pairs (basal 1–2 pairs usually withered by flowering, petiolate, petioles broadly winged, blades round-ovate, relatively small; sterile rosettes lacking), mostly cauline; petiolate (at least middle pair, petioles broadly to narrowly winged);

blades broadly deltate to ovate, 4–8 × 2–6 cm (middle pair largest), margins irregularly denticulate to coarsely dentate-serrate, apices acute, faces puberulent (hairs minute) and stipitate-glandular.

campanulate to hemispheric.

usually narrowly turbinate, rarely narrowly campanulate.

5–12;

corollas yellow.

8–16, yellow.

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers yellow.

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

9–20, linear to narrowly lanceolate.

1–6.

1–3(–5).

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

pappi 0.

brown to black, 5–7 mm, sparsely to moderately pilose and stipitate-glandular;

pappi stramineous to tawny, bristles subplumose.

= 38, 76.

= 57, 76.