Flora of North America species comparison

1–10+, erect, glabrous.

usually 1, erect, glabrous, short hispido-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 petioles that partially sheath stems;

blades oblanceolate, 100–350 × 5–60 mm, margins subentire to serrate, apices acute;

mid to distal sessile, not sheathing stems, blades lanceolate, 20–50 × 5–10 mm, much reduced distally, margins entire.

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

1–4 mm, glabrous or sparsely strigose.

narrowly campanulate, 4.5–6 mm.

3–5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

1–8 (moderately conspicuous);

laminae 3.2–3.7 × 0.4–0.6 mm.

6–10;

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

6–8;

corollas 4.6–5 mm, lobes 0.6–1 mm.

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

(14–18) in 3–5 series, unequal, usually apically ciliate;

outer ovate, acute, inner linear-oblong, obtuse.

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

35–230 in elongate paniculiform arrays, sometimes narrow and secund pyramidal, usually narrowly to broadly, non-secund thyrsiform;

branches strongly ascending with non-secund heads to arching with heads secund.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

1–2 mm, glabrous or sparsely strigillose;

pappi 2.7–3 mm (weakly clavate).

= 18.

= 18, 36.