Flora of North America species comparison

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

usually 1, unbranched or sparingly branched distally, weakly to moderately winged, glabrous proximally, sparsely to moderately 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 spatulate, entire or undulate to undulate-serrate;

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

distal blades lance-linear, entire.

3–10 cm, moderately to densely hairy.

(3–)6–11(–15) cm, sparsely to moderately hairy.

globoid, 8–20 × 8–23 mm.

hemispheric to globoid, 10–15 × 10–20 mm.

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

9–24, neuter;

corollas yellow, 12.5–21 × 4–8 mm.

200–400(–800+);

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

200–500(–800+);

corollas yellow proximally, usually purple to yellow or yellow-brown distally, 4–5.6 mm, lobes 5.

(connate proximally) moderately to densely hairy.

(connate proximally) sparsely to moderately hairy.

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

1–10 per plant, borne singly or 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 6–8 entire, non-aristate scales 1–1.7 mm.

= 32, 34, 36.

= 26, 28.