Flora of North America species comparison

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

1–6, decumbent to ascending, finely and densely puberulent.

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 present at flowering;

basal and proximal petiolate, blades oblanceolate to narrowly obovate or spatulate, 20–100 × 5–20 mm, basal much smaller than proximal, margins serrate or entire, somewhat 3-nerved, apices obtuse to acute, cuspidate, faces moderately to densely finely puberulent;

mid and distal cauline sessile, blades oblanceolate to elliptic to base, 1 prominent nerve, 10–30 × 4–12 mm, greatly reduced distally, attenuate, margins entire or distally serrate, apices acute, faces densely finely puberulent.

0.5–2 mm;

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

2–7 mm, moderately puberulent;

bracteoles 0–2, elliptic, minute.

narrowly campanulate, 3–5 mm.

campanulate, 4–6 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

(5–)6–10 (fewer than number of disc florets);

laminae ca. 3 × 1.3–1.6 mm.

4–6;

corollas 3 mm, lobes 1 mm.

8–20;

corollas 4–4.5 mm, lobes 0.8–1.1 mm.

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

in 3–4 series, oblong, strongly unequal, margins ciliate, apices blunt, glabrous.

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

30–100, in broadly corymbiform (modified paniculiform) arrays, sometimes somewhat secund.

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

pappi 3 mm.

(narrowly obconic) 2–2.8 mm, sparsely strigose;

pappi 3.5–4 mm.

= 18, 36.

= 18.