Flora of North America species comparison

usually 1, sparingly branched distally, weakly winged, glabrous or sparsely hairy.

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

glabrous or sparsely hairy;

blades all lance-linear, entire or coarsely toothed.

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.

4–13 cm, glabrous or sparsely to moderately hairy.

1.8–8 cm, moderately hairy.

globoid to ovoid, 11–16 × 14–20 mm.

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

12–18, pistillate, fertile;

corollas usually yellow, sometimes yellow with purple streaks, 10–20 × 5–13 mm.

7–13, pistillate, fertile;

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

300–500(–700+);

corollas yellow proximally, yellow to purple to dark blue-purple distally, 3.2–3.6 mm, lobes 5.

120–400+;

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

sparsely to densely hairy.

(connate proximally) moderately hairy.

1–15(–25) per plant, in paniculiform arrays.

20–300+ per plant, in paniculiform arrays.

2–2.9 mm, moderately hairy;

pappi of 6–7 entire, aristate scales 1.5–2 mm.

0.7–1.4 mm, moderately hairy;

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

= 30.