Flora of North America species comparison

1–5+, sparsely to moderately short strigose or villous.

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

basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate;

cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger 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.

1–6 mm, moderately canescent;

bracteoles linear to lanceolate.

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

bracteoles linear, sometimes minutely stipitate-glandular.

campanulate, 4.5–5.5 mm.

narrowly campanulate, 2.5–4.5 mm.

6–8;

laminae 3–4 × 1–1.5 mm wide.

(5–)8–13(–17);

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

8–14;

corollas 4–5 mm, lobes ca. 1.5 mm.

(2–)3–6(–9);

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

in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular.

in ca. 3 series, strongly unequal;

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

5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters.

(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).

(reddish brown) 2–3 mm, glabrous;

pappi 4–5 mm.

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

pappi 2.5–3.5 mm.