Flora of North America species comparison

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

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

glabrous or sparsely to moderately hairy;

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

proximal and mid blades oblanceolate to lanceolate, entire or toothed;

distal blades lanceolate to lance-linear, entire.

glabrous or sparsely hairy;

basal and proximal blades spatulate, entire;

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

3–10 cm, sparsely to moderately hairy.

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

globoid to usually ovoid, 8–17 × 9–17 mm.

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

usually 8–13, neuter, sometimes 0;

corollas yellow to reddish brown to red to purple, 10–20 × 5–10 mm.

15–30, pistillate, fertile;

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

250–500(–700+);

corollas yellow proximally and purple distally or purple throughout, 2.3–3.7 mm, lobes 4(–5).

300–750(–1000+);

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

(connate proximally) moderately to densely hairy.

(connate proximally) usually tomentose.

(1–)5–50(–80+) per plant, in paniculiform arrays.

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

1–1.2 mm, moderately hairy;

pappi of 5–6 entire, aristate scales 0.6–1(–1.7) mm.

1.5–2.5 mm, moderately to densely hairy;

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

= 28.

= 32.