Flora of North America species comparison

1–3(–10), unbranched or sparingly branched distally, weakly to moderately winged, glabrous proximally, glabrous or sparsely hairy distally.

usually 1, branched distally, moderately to strongly winged, densely (the proximal) to moderately hairy.

glabrous or sparsely hairy;

basal blades oblanceolate to oblong-elliptic, entire;

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

distal blades linear to lanceolate, entire.

moderately to densely hairy;

basal blades oblanceolate to obovate to spatulate, entire or undulate-serrate;

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

distal blades lanceolate to lance-linear, entire.

(6–)10–30 cm, sparsely to moderately hairy.

3–11 cm, moderately to densely hairy.

hemispheric to globoid, 12–20 × (14–)17–22(–25) mm.

globoid to ovoid, 9–17 × 10–20 mm.

14–20, pistillate, fertile;

corollas yellow, 13–25 × 5–10(–12) mm.

9–15, neuter;

corollas yellow, 20–30 × 8–15 mm.

250–500(–800+);

corollas yellow proximally, yellow to brown to purple distally, 3–4.4(–4.8) mm, lobes 5.

150–500(–700+);

corollas yellow proximally, reddish brown to purple distally, 3–5 mm, lobes 5.

(connate proximally) moderately to densely hairy.

(barely connate proximally) moderately to densely hairy.

1–20 per plant, borne singly or in paniculiform arrays.

3–20 per plant, in paniculiform to corymbiform arrays.

1.8–2.4 mm, moderately hairy;

pappi of 6–8 entire, aristate scales 1.3–2.2(–2.7) mm.

1–1.4 mm, sparsely to moderately hairy;

pappi of 6–7, entire, non-aristate scales 0.3–0.5 mm.

= 32.

= 28.