Flora of North America species comparison

1–10+, erect, glabrous.

1–40+, usually short-hairy throughout, sometimes proximally glabrescent.

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;

proximal cauline usually withering by flowering;

sessile or subpetiolate, tapering to bases;

blades oblanceolate, 95–150 × 16–20 mm, relatively thick and firm, entire to serrate along distal 1/2, strongly 3-nerved, apices acute to acuminate, abaxial faces finely strigose, more so along nerves, adaxial ± scabrous;

mid to distal cauline blades oblanceolate (proximally) to lanceolate (distally), mid (30–)45–100(–170) × (5–)7–16(–25) mm, much reduced distally [(15–)25–55 × (3–)4.5–10(–17) mm], margins finely serrate (teeth 0–6(–14) per side on mid), distally usually becoming entire or remotely serrulate, adaxial faces ± scabrous, abaxial moderately strigillose, densely villoso-strigillose along nerves, distal sometimes minutely stipitate-glandular.

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

1–3.5 mm, moderately densely short hispiduloso-strigillose, sometimes minutely stipitate-glandular;

bracteoles linear, sometimes minutely stipitate-glandular.

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 2.5–4.5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

(5–)8–13(–17);

laminae 0.7–1.5(–2) × 0.1–0.4(–0.5) mm.

6–10;

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

(2–)3–6(–9);

corollas usually 2.3–3.6 mm, lobes 0.5–0.9(–1.2) mm.

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

in ca. 3 series, strongly unequal;

outer lanceolate, acute, inner linear-lanceolate, margins rarely minutely stipitate-glandular, apices acute to obtuse.

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

(15–)100–1200+, secund, in secund, pyramidal, paniculiform arrays, branches divergent and recurved, sometimes ascending-divergent, sometimes merely club-shaped thyrsiform in small plants, 5–30 × 2–25 cm (often 1.5–2 times as long as wide in southern plants).

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(narrowly obconic) 0.5–1.5 mm, sparsely to moderately strigillose;

pappi 2.5–3.5 mm.

= 18.