Flora of North America species comparison

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

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

glabrous or sparsely to moderately hairy;

basal blades oblanceolate to obovate or spatulate, entire or serrate;

proximal and mid blades oblanceolate to lanceolate, entire or toothed;

distal blades lanceolate to lance-linear, entire.

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.

3–10 cm, sparsely to moderately hairy.

10–30 cm, sparsely hairy.

globoid to usually ovoid, 8–17 × 9–17 mm.

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

usually 8–13, neuter, sometimes 0;

corollas yellow to reddish brown to red to purple, 10–20 × 5–10 mm.

13–30, neuter;

corollas yellow, 14–25 × 4–10 mm.

250–500(–700+);

corollas yellow proximally and purple distally or purple throughout, 2.3–3.7 mm, lobes 4(–5).

250–650(–1000+);

corollas yellow, 4.3–5.4 mm, lobes 5.

(connate proximally) moderately to densely hairy.

sparsely to moderately hairy.

(1–)5–50(–80+) per plant, in paniculiform arrays.

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

1–1.2 mm, moderately hairy;

pappi of 5–6 entire, aristate scales 0.6–1(–1.7) mm.

1.2–1.5 mm, moderately hairy;

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

= 28.

= 32.