Flora of North America species comparison

1–10+, erect, glabrous.

usually 1, ascending to erect or arching, densely spreading-puberulent to occasionally subglabrous.

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 (rosettes) present at flowering, conspicuously petiolate, petioles slightly winged distally, to 100 mm, blades cordate, 40–120 × 40–110 mm, margins coarsely sharp-serrate, apices acute to acuminate, abaxial faces moderately to densely spreading-puberulent, adaxial sparsely so or glabrate;

mid and distal cauline progressively reduced, less petiolate, blades ovate to lanceolate, less cordate distally, 40–60 × 20–30 mm, margins finely serrate.

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

0–1 mm, sparsely hispido-strigose, bracteoles 1–4, lanceolate-ovate, grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 3–4.5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

3–6;

laminae ca. 1 × 0.5–0.7 mm.

6–10;

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

3–6;

corollas 2–2.5 mm, lobes 0.75–1.2 mm.

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

in 2–3 series, ovate, strongly unequal, outer somewhat keeled, firm, margins ciliate.

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

50–250, densely crowded, often subglomerate, in secund paniculiform arrays, proximal branches few, widely spreading, secund, elongate, distal short, recurved.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

1–2 mm, sparsely short-strigose;

pappi ca. 0.5 mm (forming many-bristled crown on longer cypselae).

= 18.

= 18.