Flora of North America species comparison

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

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

glabrous or sparsely hairy;

blades narrowly elliptic to lance-linear, usually entire;

proximal blades sometimes pinnately lobed.

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.

3–13 cm, sparsely to moderately hairy.

1.8–8 cm, moderately hairy.

ovoid to conic, 7–11(–14) × 6–11 mm.

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

10–15, pistillate, fertile;

corollas yellow, 7–12.4 × 4–8.8 mm.

7–13, pistillate, fertile;

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

225–500+;

corollas yellow proximally, yellow to brown to reddish brown distally, 1.1–1.8 mm, lobes 4.

120–400+;

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

(connate proximally) sparsely to densely hairy.

(connate proximally) moderately hairy.

5–15(–50+) per plant, in paniculiform arrays.

20–300+ per plant, in paniculiform arrays.

0.6–1.2 mm, moderately hairy;

pappi of usually 6 entire, non-aristate scales 0.1–0.3 mm.

0.7–1.4 mm, moderately hairy;

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

= 26.