Flora of North America species comparison

usually 1, usually unbranched distally, moderately to strongly winged, glabrous proximally, glabrous or sparsely hairy distally.

glabrous;

basal blades narrowly obovate to narrowly oblanceolate, usually entire, sometimes undulate-serrate;

proximal and mid blades narrowly lanceolate, usually entire, sometimes undulate-serrate;

distal blades lance-linear, usually entire, rarely undulate-serrate.

10–30 cm, sparsely hairy.

hemispheric to globoid, 10–18 × 15–25 mm.

13–30, neuter;

corollas yellow, 14–25 × 4–10 mm.

250–650(–1000+);

corollas yellow, 4.3–5.4 mm, lobes 5.

sparsely to moderately hairy.

1(–3) per plant, usually borne singly.

1.2–1.5 mm, moderately hairy;

pappi of 5–12 deeply lacerate, non-aristate scales 2–3.7 mm.

= 32.