Flora of North America species comparison

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

usually 1, branched distally, moderately to strongly winged, densely (the proximal) to moderately hairy.

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.

moderately to densely hairy;

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

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

distal blades lanceolate to lance-linear, entire.

3–10 cm, moderately to densely hairy.

3–11 cm, moderately to densely hairy.

globoid, 8–20 × 8–23 mm.

globoid to ovoid, 9–17 × 10–20 mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

9–15, neuter;

corollas yellow, 20–30 × 8–15 mm.

200–400(–800+);

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

150–500(–700+);

corollas yellow proximally, reddish brown to purple distally, 3–5 mm, lobes 5.

(connate proximally) moderately to densely hairy.

(barely connate proximally) moderately to densely hairy.

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

3–20 per plant, in paniculiform to corymbiform arrays.

1–2 mm, sparsely to moderately hairy;

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

1–1.4 mm, sparsely to moderately hairy;

pappi of 6–7, entire, non-aristate scales 0.3–0.5 mm.

= 32, 34, 36.

= 28.