Flora of North America species comparison

1–5, sparsely to moderately strigoso-puberulent.

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

basal petioles 3–5 cm, blades oblanceolate or spatulate to ovate or rotund, 2–4 cm (excluding petioles);

cauline (numerous) subsessile or sessile, blades elliptic or lance-elliptic to ovate, mid mostly 25–50(–65) × 10–25 mm, distal much reduced;

branch leaf petioles 1 mm, blades ovate, 5–15 (excluding petioles) × 2–10 mm.

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.

linear, 1–3 mm, bracteate.

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

bracteoles linear, sometimes minutely stipitate-glandular.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 2.5–4.5 mm.

0(–2).

(5–)8–13(–17);

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

4–8;

corollas 3 mm, lobes 1 mm.

(2–)3–6(–9);

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

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

in ca. 3 series, strongly unequal;

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

75–200 in open paniculiform arrays, branches divaricate, ascending to recurved, weakly to strongly secund, to 50 cm, secondary branches less than 3 cm.

(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).

2.5–3 mm, moderately short-strigose;

pappi 2 mm.

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

pappi 2.5–3.5 mm.

= 18.