Flora of North America species comparison

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

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

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 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.

1–6 mm, moderately canescent;

bracteoles linear to lanceolate.

1–6 mm, sparsely to densely strigillose;

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

campanulate, 4.5–5.5 mm.

campanulate, 3.5–6 mm.

6–8;

laminae 3–4 × 1–1.5 mm wide.

6–12;

laminae 2.9–6.3 × 0.3–0.7(–1) mm.

8–14;

corollas 4–5 mm, lobes ca. 1.5 mm.

5–17;

corollas 3.5–6 mm, lobes 0.8–1.7 mm.

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

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

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.

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

(reddish brown) 2–3 mm, glabrous;

pappi 4–5 mm.

0.7–2.7 mm, sparsely to densely strigillose;

pappi 2.5–4.7 mm.