Flora of North America species comparison

1(–7), branched distally, strongly winged, sparsely to densely hairy proximally, moderately to densely hairy distally.

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

usually moderately to densely hairy, sometimes glabrous;

basal blades (withered by flowering) lanceolate, oblanceolate, or obovate, entire or weakly lobed;

proximal and mid blades obovate to oblanceolate, usually dentate or entire;

distal blades oblanceolate to lanceolate, entire or dentate.

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, moderately to densely hairy.

10–30 cm, sparsely hairy.

globoid, 8–20 × 8–23 mm.

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

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

13–30, neuter;

corollas yellow, 14–25 × 4–10 mm.

200–400(–800+);

corollas yellow proximally, yellow to yellow-brown distally, 2.4–4 mm, lobes 5.

250–650(–1000+);

corollas yellow, 4.3–5.4 mm, lobes 5.

(connate proximally) moderately to densely hairy.

sparsely to moderately hairy.

5–70(–100+) per plant, in paniculiform arrays.

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

1–2 mm, sparsely to moderately hairy;

pappi of 5–7 entire, aristate scales (0.5–)0.9–1.5(–1.8) mm.

1.2–1.5 mm, moderately hairy;

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

= 32, 34, 36.

= 32.