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, narrowly winged, sparsely hairy proximally, moderately hairy distally.

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 blades lance-linear, usually coarsely or irregularly laciniate;

mid and distal blades lance-linear to linear, entire.

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

2–8 cm, sparsely to moderately hairy.

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

globose to slightly ovoid, 6–11(–13) × 6–11(–13) mm.

14–20, pistillate, fertile;

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

8–9, pistillate, fertile;

corollas yellow throughout or red proximally and yellow distally or red throughout, 6–12 × 3–8 mm.

250–500(–800+);

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

150–300(–500+);

corollas yellow-green proximally, brown to purple distally, 2.5–3.2 mm, lobes 5.

(connate proximally) moderately to densely hairy.

moderately hairy.

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

5–50(–100+) 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.

1–1.2 mm, moderately hairy;

pappi of 6(–7) entire, aristate scales 2–2.5 mm.

= 32.

= 28.