Flora of North America species comparison

1–10+, erect, glabrous.

1–10, ascending to erect, uniformly finely strigillose-villous distal to mid.

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 cauline nearly always withering well before flowering, linear-oblanceolate, smaller than proximal mid cauline, serrate;

proximal persisting, sometimes brown-black after senescence, often twisted;

proximal to distal numerous (100+ on tall stems), crowded, sessile, blades (bright green) linear to linear-lanceolate, 20–70 × 2–7(–10) mm, margins remotely serrulate (proximal) to entire or with 1–2 minute serrations (distal), obscurely 3-nerved, one or both faces glabrous or finely strigillose.

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

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 2.5–3.5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

6–10;

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

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

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

in 3–4 series, strongly unequal;

outer ovate, acute, inner oblong, obtuse to rounded.

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

100–300+, in short to elongate, pyramidal paniculiform arrays, branches recurved, secund.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

= 18.

= 18.