Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, erect, stout, hairy.

basal and proximal cauline usually withering by flowering (other rosettes may be present), tapering to long, winged petioles, blades often recurved, linear- lanceolate or -oblanceolate, 100–240 × 8–16 mm, folded along midrib (V-shaped in cross section), bases usually with (2–)3–8 prominent lateral nerves, apices acute to obtuse, faces glabrous;

mid to distal cauline sessile, blades recurved, linear-lanceolate, 50–70 × 8–11 mm, reduced distally, folded, bases with prominent lateral nerves.

basal and proximal cauline usually present at flowering, abruptly narrowed to long petioles, blades ovate to rhombic, 80–200 × 24–50 mm, firm, flat, margins entire to crenate, sometimes undulate, apices obtuse to acute, faces densely hairy;

mid to distal cauline sessile, blades ovate, 30–50 × 15–17 mm, stiff, greatly reduced distally, margins entire or finely serrate, sometimes undulate, apices acute to obtuse.

2.8–4 mm, moderately short-hispido-strigose, lanceolate bracteoles 0–1.

3–15 mm, strigillose-canescent, bracteoles 1–3, linear-lanceolate.

narrowly campanulate, 4.5–6 mm.

campanulate, 6–8 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

6–13;

laminae 1.4–5.4 × 1.2–1.9 mm.

6–10;

corollas 4.5–5.2 mm, lobes 0.7–1.8 mm.

14–35;

corollas 4.3–6.1 mm, lobes 0.6–1.1 mm.

(14–18) in 3–4 series, unequal, obtuse, broad, striations weak, obtuse to rounded, glabrous.

in 3–4 series, unequal, oblong, conspicuously striate (3–5 pronounced nerves), obtuse.

30–450 in corymbiform to somewhat paniculiform with rounded corymbiform branches (robust plants) arrays, branches and peduncles strigillose.

9–190, in corymbiform arrays, compact or branches long and spreading, densely hairy throughout.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(obconic) 0.8–1.7 mm (ribbed), glabrous or strigillose apically;

pappi 3–4 mm.

= 18.