Flora of North America species comparison

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

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

glabrous or sparsely hairy;

basal and proximal blades spatulate, entire;

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

usually glabrous, rarely sparsely hairy;

basal blades obovate to narrowly oblanceolate, usually entire or undulate to undulate-serrate;

proximal and mid blades usually narrowly lanceolate to narrowly oblanceolate, usually entire, sometimes toothed;

distal blades lance-linear, entire.

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

2–23 cm, usually glabrous, sometimes sparsely hairy.

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

hemispheric, 10–17 × 15–27 mm.

15–30, pistillate, fertile;

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

13–30, neuter;

corollas yellow, 15–21 × 5–10 mm.

300–750(–1000+);

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

150–650(–800+);

corollas yellow proximally, yellow to yellow-brown distally, 4.6–6 mm, lobes 5.

(connate proximally) usually tomentose.

glabrous or sparsely hairy.

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

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

1.5–2.5 mm, moderately to densely hairy;

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

1–1.5 mm, glabrous;

pappi of usually 8 entire or lacerate, non-aristate scales 1.5–2 mm.

= 32.

= 34.