Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, erect, proximally glabrous, glabrous or sparsely villoso-strigose in arrays; often with short fascicles in axils of mid to distal cauline leaves.

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.

rosettes present at flowering;

basal and proximal tapering to winged petioles, blades oblanceolate, 70–210 × 8–28 mm, somewhat fleshy (fresh), margins entire, sometimes shallowly crenate or serrate distally, sometimes undulate, apices acute, mucronate or attenuate, glabrous;

mid and distal cauline not crowded, sessile, blades lanceolate to linear-lanceolate, 10–120 × 5–16 mm, reduced distally, margins entire.

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

2–8 mm, glabrous or sparsely strigose;

bracteoles 0–4.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 3–4 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

(5–)11–15;

laminae 1.5–3.5 × 0.5–0.75 mm.

6–10;

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

8–22;

corollas 2.5–4.5 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, outer narrowly ovate to lanceolate (1.5–3 × 0.4–1 mm), unequal, obtuse to acuminate.

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

60–100, in thyrsiform-paniculiform arrays, sometimes secund apically, (3.5–)6–26(–60) x 4–10(–15) cm, branches ascending to arching.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(narrowly obconic) 1.5–2.5 mm (ribs 5–8, broad, lighter than body), sparsely strigose;

pappi 3–4 mm.

= 18.

= 18.