Flora of North America species comparison

(forming clumps) simple or branched among heads.

(branches from rhizomes) 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.

2–4 pairs (basal often persistent on sterile rosettes), mostly cauline; petiolate (at least basal) or sessile;

blades oblanceolate to spatulate, 2–7 × 0.5–2.5 cm, margins usually entire, sometimes denticulate, rarely dentate, apices usually acute, sometimes obtuse, faces sparsely puberulent, moderately pubescent distally, stipitate-glandular.

usually narrowly turbinate, rarely narrowly campanulate.

turbinate-campanulate.

8–16, yellow.

6–10;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

9–20, linear to narrowly lanceolate.

9–15, linear-oblong to narrowly lanceolate.

1–3(–5).

1–3(–5).

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

pappi stramineous to tawny, bristles subplumose.

brown, 4–7 mm, densely hirsute (not stipitate-glandular);

pappi white, bristles barbellate.

= 57, 76.

= 38, 76.