Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, erect, proximally glabrous, increasingly puberulent distally into 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 0;

mid and distal cauline numerous (sometime 100+ per stem), crowded, sessile or subsessile;

blades linear-elliptic, mostly 50–120 × 6–12 mm, tapering at both ends, margins remotely serrulate or subentire, 3-nerved, faces glabrous or sometimes puberulent abaxially on midnerves.

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

1–3 mm, sparsely strigose;

bracteoles linear, 1–3.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 2–3 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

mostly 7–11, 1–2 × 0.1–0.2 mm.

6–10;

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

2–7;

corollas 2–3 mm, lobes 0.4–0.6 mm.

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

in 3–4 series, linear-lanceolate, strongly unequal, midribs raised, enlarged apically, apices acute to usually obtuse or rounded, apically ciliate.

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

80–900+, in paniculiform arrays, branches recurved, secund.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(narrowly obconic) 1–1.5 mm, sparsely strigillose;

pappi 2–2.5 mm.

= 18.

= 18, 36.