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, glabrous or sparsely 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.

glabrous or sparsely hairy;

blades narrowly elliptic to lance-linear, usually entire;

proximal blades sometimes pinnately lobed.

3–10 cm, moderately to densely hairy.

3–13 cm, sparsely to moderately hairy.

globoid, 8–20 × 8–23 mm.

ovoid to conic, 7–11(–14) × 6–11 mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

10–15, pistillate, fertile;

corollas yellow, 7–12.4 × 4–8.8 mm.

200–400(–800+);

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

225–500+;

corollas yellow proximally, yellow to brown to reddish brown distally, 1.1–1.8 mm, lobes 4.

(connate proximally) moderately to densely hairy.

(connate proximally) sparsely to densely hairy.

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

5–15(–50+) 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.

0.6–1.2 mm, moderately hairy;

pappi of usually 6 entire, non-aristate scales 0.1–0.3 mm.

= 32, 34, 36.

= 26.