Flora of North America species comparison

1–10+, erect, glabrous.

1 or in clones 2–5+, proximally glabrous or short-strigose in arrays.

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 long, winged petioles (to 100 mm), blades elliptic to obovate or ovate, 80–200 (including petioles) × 25–80 mm, bases broadly to narrowly attenuate, margins serrate, apices acute or obtuse, faces glabrous or sparsely scabroso-strigose;

mid to distal cauline sessile, blades linear-elliptic to elliptic-oblanceolate, 20–60 × 4–20 mm, much reduced distally and usually ascending to appressed, bases tapered, margins entire to sparsely shallowly serrate, ciliate, apices acute.

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

1–4 mm short-strigose, bracteolate.

narrowly campanulate, 4.5–6 mm.

campanulate, 4–5(–5.8) mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

4–6;

laminae ± 2 × 1 mm.

6–10;

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

5–7;

corollas 4–5 mm, lobes 1–1.5 mm.

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

in 3–4 series, ascending, lanceolate to oblong, strongly unequal, margins finely fimbriate-ciliate distally, midnerves swollen apically, apices broadly acute to obtuse, faces glabrous.

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

50–140, secund on longer branches, less so on apical branches, in open paniculiform arrays, proximal branches ascending and bracteate, apical portions arching.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(greenish turning golden brown, obconic) 2–3 mm (ribs 4–7), short strigose, more so on distal 1/2;

pappi 3–4 mm.

= 18.

= 18, 36.