Flora of North America species comparison

1(2–10), branched distally, moderately to strongly winged, glabrous or sparsely hairy.

proximal and mid blades serrate to undulate-serrate to occasionally deeply toothed or laciniate, glabrate;

distal blades glabrous or sparsely to moderately hairy.

glabrous or sparsely to moderately hairy (basal withered by flowering);

proximal and mid blades narrowly elliptic to narrowly oblong-elliptic, usually serrate to undulate-serrate, sometimes deeply toothed or laciniate;

distal blades narrowly elliptic to narrowly oblong-elliptic, serrate to undulate-serrate.

1.5–8 cm, usually projecting terminal heads well beyond foliage.

1.8–8 cm, moderately hairy.

8–12 × 8–12 mm.

globoid to usually ovoid, 4–12 × 4–12 mm.

9–13;

corollas usually yellow throughout, sometimes reddish proximally and yellow distally, 2.7–9.1 × 1.5–6.7 mm.

7–13, pistillate, fertile;

corollas usually yellow throughout, sometimes reddish proximally and yellow distally, 2.6–9.1 × 1.5–6.7 mm.

200–400+;

corollas 1.7–2.4 mm, lobes 5.

120–400+;

corollas yellow to yellow-green proximally, brown to reddish brown distally, 1.2–2.4 mm, lobes (4–)5.

(connate proximally) moderately hairy.

20–100+ per plant.

20–300+ per plant, in paniculiform arrays.

0.7–1.4 mm, moderately hairy;

pappi of usually 6 entire, non-aristate scales (0.2–)0.3–0.7 mm.

0.4–0.7 mm.

= 26.