Flora of North America species comparison

usually 1, usually unbranched distally, weakly winged, glabrous proximally, sparsely to moderately hairy distally.

usually 1, branched distally, strongly winged, glabrous proximally, sparsely hairy distally.

glabrous or sparsely hairy;

basal and proximal blades spatulate, entire;

mid and distal blades ovate to oblanceolate to oblong-elliptic, entire.

glabrous or sparsely hairy;

basal blades oblanceolate to oblong-elliptic, entire;

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

distal blades lance-linear, entire.

10–30(–50) cm, usually densely hairy (tomentose near involucres).

(6–)9–17(–23) cm, sparsely to moderately hairy.

depressed hemispheric to globoid, 14–24 × 18–34 mm.

globose to depressed globose, 9–15 × 9–17(–19) mm.

15–30, pistillate, fertile;

corollas yellow, (12–)16–28(–37) × 6–13(–25) mm.

0, or 13–15, pistillate, fertile;

corollas yellow, 3.8–10 × 2–4 mm.

300–750(–1000+);

corollas yellow proximally, yellow to brown to purple distally, 4–5(–5.2) mm, lobes 5.

300–500(–1000+);

corollas yellow proximally, yellow to reddish brown to purple distally, (1.6–)1.9–2.7 mm, lobes 4(–5).

(connate proximally) usually tomentose.

(distinct or connate proximally) moderately hairy.

1(–3) per plant, usually borne singly.

4–20(–30) per plant, in paniculiform arrays.

1.5–2.5 mm, moderately to densely hairy;

pappi of 6–8 entire, aristate scales (2.5–)3–4.5 mm.

1.2–1.9 mm, moderately hairy;

pappi of 5–6 entire, aristate scales 0.4–1 mm.

= 32.

= 58.