Flora of North America species comparison

usually 1–3, ascending to erect, scabrous to loosely puberulent.

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

basal and proximal usually withering by flowering, tapering to long-winged petioles, blades oblanceolate, 30–100 × 7–20(–30) mm, margins serrate or crenate, mid usually largest, apices acute to obtuse, acuminate, faces scabrous;

mid and distal cauline subsessile (1 mm) or sessile, blades (sometimes ± shiny) elliptic to oblanceolate, 10–50 × 5–15(–25) mm, greatly reduced distally, grading into bracts, firm, bases convex-cuneate to rounded, margins finely serrate, often 3-nerved, nerves usually distinct abaxially, faces distinctly scabrous.

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.

0.5–2 mm;

bracteoles 1–5, linear-lanceolate to ovate, minute, grading into phyllaries distally.

1–6 mm, sparsely to densely strigillose;

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

narrowly campanulate, 3–5 mm.

campanulate, 3.5–6 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

6–12;

laminae 2.9–6.3 × 0.3–0.7(–1) mm.

4–6;

corollas 3 mm, lobes 1 mm.

5–17;

corollas 3.5–6 mm, lobes 0.8–1.7 mm.

in 3–4 series, unequal, oblong, midnerves swollen distally, obtuse or acute to slightly acuminate.

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

20–260, in paniculiform arrays, narrowly to broadly secund, pyramidal, branches recurved, secund.

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

1.5–2.5 mm, sparsely to moderately short-strigose;

pappi 3 mm.

0.7–2.7 mm, sparsely to densely strigillose;

pappi 2.5–4.7 mm.

= 18, 36.