Flora of North America species comparison

1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.

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

rosettes present at flowering;

basal and proximal cauline tapering to long, winged petioles sheathing stems or nearly so, blades narrowly ovate to oblanceolate, 100–400 × 10–60 mm, thick or fleshy, entire, acute, glabrous;

mid to distal cauline usually numerous, sessile, blades lanceolate, 40–60 × 5–10 mm, reduced distally, thick or fleshy, bases sometimes subclasping, margins entire.

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.

2–3 mm, glabrous or sparsely hairy.

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

bracteoles linear, sometimes minutely stipitate-glandular.

3–7 mm.

narrowly campanulate, 2.5–4.5 mm.

8–17;

laminae 5–6.2 × 0.4–0.6 mm.

(5–)8–13(–17);

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

10–22;

corollas 3–3.2 mm, lobes 0.5–1.2 mm.

(2–)3–6(–9);

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

in 3–4 series, unequal, lanceolate, margins ciliate, apices acute.

in ca. 3 series, strongly unequal;

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

20–500, secund, in paniculiform arrays, secund-pyramidal to broadly club-shaped, sometimes leafy proximally, at least proximal branches spreading-recurved, branches and peduncles bracteolate, bracteoles reduced distally.

(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).

(obconic) 1.1–1.5 mm, moderately strigose;

pappi 3.8–4 mm (slightly clavate).

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

pappi 2.5–3.5 mm.