Flora of North America species comparison

(forming clumps) simple or branched among heads.

solitary, simple.

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.

3–5 pairs, crowded toward stem bases (some or all axils with dense tufts of brown wool); petiolate (petioles at least basal leaves, narrow or broadly winged);

blades (with 3 or 5 prominent, subparallel veins) usually narrowly oblanceolate to oblong, rarely oval or broadly spatulate, 4.5–20 × 0.5–2.5 cm, margins denticulate, apices obtuse, faces moderately uniformly hairy, stipitate-glandular.

usually narrowly turbinate, rarely narrowly campanulate.

broadly hemispheric.

8–16, yellow.

8–16;

corollas yellow-orange.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

9–20, linear to narrowly lanceolate.

13–21, elliptic-oblong or narrowly to broadly lanceolate.

1–3(–5).

1(–3).

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

pappi stramineous to tawny, bristles subplumose.

brown, 3.5–7 mm, densely hirsute, sometimes sparingly stipitate-glandular;

pappi usually white, sometimes tawny, bristles barbellate.

= 57, 76.

= 38, 57.