Flora of North America species comparison

(forming clumps) simple or branched among heads.

(often 5–10 in dense clumps) branched distally.

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.

2–3 pairs, mostly cauline (basal leaves often persistent on sterile rosettes, similar to cauline leaves); petiolate (petioles narrowly to broadly winged, distal pair of leaves often reduced, connate-perfoliate);

blades ovate to ovate-lanceolate, 2–6 × 1–3 cm, margins irregularly serrate to subentire, apices acute, faces: abaxial glandular, adaxial stipitate-glandular.

usually narrowly turbinate, rarely narrowly campanulate.

turbinate-campanulate.

8–16, yellow.

5–12;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

9–20, linear to narrowly lanceolate.

10–16, ovate-lanceolate.

1–3(–5).

(1–)5–15.

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

pappi stramineous to tawny, bristles subplumose.

black, 4.5–7 mm, hairy (hairs duplex) and stipitate-glandular;

pappi white, bristles barbellate.

= 57, 76.

= 57, 76.