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, sparingly branched distally, weakly winged, glabrous or sparsely 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;

blades all lance-linear, entire or coarsely toothed.

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

4–13 cm, glabrous or sparsely to moderately hairy.

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

globoid to ovoid, 11–16 × 14–20 mm.

14–20, pistillate, fertile;

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

12–18, pistillate, fertile;

corollas usually yellow, sometimes yellow with purple streaks, 10–20 × 5–13 mm.

250–500(–800+);

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

300–500(–700+);

corollas yellow proximally, yellow to purple to dark blue-purple distally, 3.2–3.6 mm, lobes 5.

(connate proximally) moderately to densely hairy.

sparsely to densely hairy.

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

1–15(–25) 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.

2–2.9 mm, moderately hairy;

pappi of 6–7 entire, aristate scales 1.5–2 mm.

= 32.

= 30.