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

3–10 cm, moderately to densely hairy.

3–10 cm, sparsely to moderately hairy.

globoid, 8–20 × 8–23 mm.

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

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

usually 8–13, neuter, sometimes 0;

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

200–400(–800+);

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

250–500(–700+);

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

(connate proximally) moderately to densely hairy.

(connate proximally) moderately to densely hairy.

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

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

1–2 mm, sparsely to moderately hairy;

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

1–1.2 mm, moderately hairy;

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

= 32, 34, 36.

= 28.