Flora of North America species comparison

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

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.

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

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

campanulate, 3–6 mm.

6–10;

laminae 1–2 × 0.2–0.6 mm.

3–8;

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

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

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

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

pappi ca. 2–3 mm.

= 18, 36, 54.