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 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.

glabrous or sparsely hairy (basal withered by flowering);

proximal and mid blades lanceolate to narrowly elliptic, entire, serrate, or irregularly toothed or lobed;

distal blades lanceolate to linear, entire.

3–10 cm, moderately to densely hairy.

2–14 cm, moderately to densely hairy.

globoid, 8–20 × 8–23 mm.

globoid, 5–11 × 5–12(–13) mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

10–17, pistillate, fertile;

corollas yellow throughout or red-brown to red proximally and yellow distally, 5.5–15(–19) × 2.2–5.5(–8.7) mm.

200–400(–800+);

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

150–700+;

corollas yellow proximally, yellow to brown to usually reddish brown distally, 1.5–2.3(–2.5) mm, lobes 5.

(connate proximally) moderately to densely hairy.

(connate proximally) moderately to densely hairy.

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

20–200+ 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 mm, moderately hairy;

pappi of 6–7 entire, non-aristate scales 0.05–0.3(–0.4) mm.

= 32, 34, 36.