Flora of North America species comparison

1–10+, erect, glabrous.

1 (at ends of rhizomes), ascending to erect, grayish green, moderately to densely finely strigilloso-puberulent.

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 often withering by flowering, gradually tapering to winged petioles 1/2 length of leaf, blades 45–100 × 10–35 mm, proximalmost much smaller, margins serrate, faces moderately finely scabroso-strigillose;

mid and distal cauline sessile, blades elliptic to lanceolate or ovate, 10–60 × 4–20 mm, sometimes much reduced distally, firm, thickish, margins serrate to entire, strongly 3-nerved or sometimes brochidodromous, faces moderately finely strigillose.

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

0.5–3 mm, moderately to densely finely hispiduloso-strigillose;

bracteoles 0–3, lanceolate, strigillose, grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

campanulate, 3–6 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

6–10;

laminae 1–2 × 0.2–0.6 mm.

6–10;

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

3–8;

corollas 2.4–3.8 mm, lobes 0.7–1.2 mm.

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

in 3–4 series, lanceolate to oblong (to 1.5 mm wide), strongly unequal, margins ciliate, apices acute to obtuse, glabrous.

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

(5–)50–300, in compact thyrsiform to secund-pyramidal paniculiform arrays, proximal branches ascending, sometimes apically recurved or branches spreading, recurved, secund.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(cylindro-obconic) 1.5–2 mm, sparsely strigillose;

pappi ca. 2–3 mm.

= 18.

= 18, 36, 54.