Flora of North America species comparison

1 (at ends of rhizomes), ascending to erect, glabrate proximally to sparsely to densely strigoso-puberulent distally.

1–5, densely, evenly villoso-tomentose (hairs white, thin, crisped).

basal and proximal cauline often persisting to flowering, gradually tapering to winged petioles, blades linear oblanceolate to oblanceolate, rarely spatulate, 50–120 × 8–30 mm, proximalmost much smaller, margins entire to sharply serrate, faces glabrate to moderately scabroso-strigose;

mid and distal cauline sessile or subsessille, blades elliptic to oblanceolate or obovate, 10–50 × 3–12 mm, mid tapering to bases, somewhat to strongly 3-nerved, largest, usually much reduced distally, margins entire or sometimes distally serrate, apices acute, faces sparsely to densely strigoso-puberulent, sometimes softly so.

basal 0;

mid and distal cauline lanceolate to narrowly lanceolate, 3-nerved, 50–80(–120) × 5–10(–12) mm, reduced distally to 10–20 mm, margins shallowly crenate or serrate to nearly entire, faces moderately to densely short pilose (hairs somewhat ascending).

1–6 mm, sparsely to densely strigillose;

bracteoles 0–5, sometimes clustered near to and grading into phyllaries, linear-lanceolate.

moderately to densely villoso-strigillose, rarely sparsely minutely stipitate-glandular;

bracteoles 1–2(–4).

campanulate, 3.5–6 mm.

narrowly campanulate, 3–4 mm.

6–12;

laminae 2.9–6.3 × 0.3–0.7(–1) mm.

7–15;

laminae 1–2(–3) × 0.1–0.6 mm.

5–17;

corollas 3.5–6 mm, lobes 0.8–1.7 mm.

5–9;

corollas 2.8–3 mm, lobes 0.4–1.1 mm.

in 3–5 series, lanceolate to oblong, strongly unequal, acute or sometimes obtuse, glabrous or sparsely strigillose.

in 3–4 series, oblong-lanceolate or lanceolate to narrowly elliptic, strongly unequal, margins apically ciliate, glabrous, rarely outer sparsely, minutely stipitate-glandular.

(2–)30–500, in narrow to broad, thyrsiform to secund-pyramidal paniculiform arrays, branches recurved, secund, congested to lax.

80–950, secund, in narrowly pyramidal paniculiform arrays, 3–4 times as long as wide, branches spreading and slightly secund, bracts linear-lanceolate, 3–6 mm.

0.7–2.7 mm, sparsely to densely strigillose;

pappi 2.5–4.7 mm.

(narrowly obconic) 1.4–1.6 mm, sparsely strigillose;

pappi ca. 3 mm.

= 18.