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, strongly winged, glabrous proximally, 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 or sparsely hairy;

basal blades oblanceolate to oblong-elliptic, entire;

proximal and mid blades lanceolate to oblong-elliptic, entire;

distal blades lance-linear, entire.

3–10 cm, moderately to densely hairy.

(6–)9–17(–23) cm, sparsely to moderately hairy.

globoid, 8–20 × 8–23 mm.

globose to depressed globose, 9–15 × 9–17(–19) mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

0, or 13–15, pistillate, fertile;

corollas yellow, 3.8–10 × 2–4 mm.

200–400(–800+);

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

300–500(–1000+);

corollas yellow proximally, yellow to reddish brown to purple distally, (1.6–)1.9–2.7 mm, lobes 4(–5).

(connate proximally) moderately to densely hairy.

(distinct or connate proximally) moderately hairy.

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

4–20(–30) 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.

1.2–1.9 mm, moderately hairy;

pappi of 5–6 entire, aristate scales 0.4–1 mm.

= 32, 34, 36.

= 58.