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, glabrous or sparsely 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.

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.

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

2–14 cm, moderately to densely hairy.

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

globoid, 5–11 × 5–12(–13) mm.

14–20, pistillate, fertile;

corollas yellow, 13–25 × 5–10(–12) 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.

250–500(–800+);

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

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

20–200+ per plant, in paniculiform arrays.

1.8–2.4 mm, moderately hairy;

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

0.6–1 mm, moderately hairy;

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

= 32.