Flora of North America species comparison

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

1–3(–15), usually branched distally, not 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;

basal blades linear to ovate, entire or pinnately toothed or lobed to pinnatifid;

mid and distal blades linear, entire.

3–10 cm, moderately to densely hairy.

3–11 cm, sparsely hairy.

globoid, 8–20 × 8–23 mm.

hemispheric to globose or globoid, 5–9 × 6–10 mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

8–10, pistillate, fertile;

corollas yellow, 4.5–14 × 2–10 mm.

200–400(–800+);

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

75–250+;

corollas yellow proximally, yellow to yellow-brown or purple distally, 1.6–2.7 × 0.8–1.2 mm, lobes 5.

(connate proximally) moderately to densely hairy.

moderately to densely hairy.

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

(1–)10–150(–250+) 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.

0.7–1.3 mm, moderately to densely hairy;

pappi of 6–8 entire, aristate scales 1–1.8 mm.

= 32, 34, 36.