Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, erect, slender to stout (tall shoots), glabrous.

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 often persistent, also present as new rosettes at flowering, tapering to winged petioles to 250 mm, blades narrowly ovate to lanceolate, 50–150 × 15–45 mm, apices obtuse to acute, faces glabrous;

proximal cauline similar, reduced distally (petioles becoming less developed);

distal sessile, blades prominently 1-nerved, ovate to lanceolate, 75–100 × 8–12 mm, much reduced distally, margins entire, flat, apices acute.

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

6.3–8.5 mm, glabrous;

bracteoles 3, linear to lanceolate, sometimes grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

campanulate, 4–5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

6–8;

laminae 4.6–5 × 0.5–0.7 mm.

6–10;

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

8–20;

corollas 4–4.5 mm, lobes 0.6–1 mm.

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

(14–18) in 3–4 series, broadly linear to ovate, unequal, obtuse, obscurely striate.

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

10–500+ in corymbiform arrays, branches glabrous.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(obconic) 1.6–2.2 mm, glabrous;

pappi 2.5–3 mm (apically clavate).

= 18.

= 18.