Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, essentially glabrous.

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 tapering to short petioles, blades oblanceolate, 50–70 × 10–20 mm, margins serrate, scabroso-strigose, apices acute to acuminate, faces glabrous;

mid and distal cauline subpetiolate or sessile, blades elliptic-lanceolate, 30–70 × 7–15 mm, gradually reduced distally, tapering to bases, margins serrate, scabroso-strigose;

branch leaves similar, reduced to bracts distally.

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

2–5 mm, bracteolate, glabrous;

bracteoles grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 3–5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

1–4;

laminae 1–2 × 0.5–0.8 mm.

6–10;

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

4–6;

corollas 2.5 mm, lobes 1 mm.

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

in 3–4 series, linear-lanceolate, strongly unequal, acute to ± attenuate, glabrous.

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

160–480 in paniculiform arrays, with a strongly secund, primary, arching axis and nearly always 4–5(–8) leafy, elongate, arching, secund, proximal branches.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

1.5–2 mm (6–9 ribs), sparsely strigose, more so apically;

pappi 1.5–2 mm.

= 18.

= 18.