Flora of North America species comparison

1(–7), branched distally, strongly winged, sparsely to densely hairy proximally, moderately to densely hairy distally.

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

usually moderately to densely hairy, sometimes glabrous;

basal blades (withered by flowering) lanceolate, oblanceolate, or obovate, entire or weakly lobed;

proximal and mid blades obovate to oblanceolate, usually dentate or entire;

distal blades oblanceolate to lanceolate, entire or dentate.

glabrous or sparsely hairy;

basal and proximal blades spatulate, entire;

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

3–10 cm, moderately to densely hairy.

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

globoid, 8–20 × 8–23 mm.

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

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

15–30, pistillate, fertile;

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

200–400(–800+);

corollas yellow proximally, yellow to yellow-brown distally, 2.4–4 mm, lobes 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.

5–70(–100+) per plant, in paniculiform arrays.

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

1–2 mm, sparsely to moderately hairy;

pappi of 5–7 entire, aristate scales (0.5–)0.9–1.5(–1.8) mm.

1.5–2.5 mm, moderately to densely hairy;

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

= 32, 34, 36.

= 32.