Flora of North America species comparison

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

usually single, erect, essentially glabrous basally to hispidulo-puberulent in arrays.

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 tapering to long, winged petioles (quickly reduced distally on stems), blades broadly oblanceolate to obovate, 40–150 × 15–50 mm, margins serrate, finely ciliate, apices acute to obtuse, faces glabrous;

mid and distal cauline sessile, blades linear-elliptic, 5–50 × 2–10 mm, margins entire, finely ciliate.

0.5–2 mm;

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

1–3 mm.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 3.5–6.5 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

5–9;

laminae 2.5–3.5 × 0.7–1 mm.

4–6;

corollas 3 mm, lobes 1 mm.

commonly 6–10;

corollas 4 mm, lobes ca. 1 mm.

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

in 3–5 series, appressed, strongly unequal, outer ovate, inner broadly oblong, obtuse to rounded, glabrous.

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

15–350 (1–10 per branch), clustered on short divergent lateral branches in elongate and usually narrowly paniculiform arrays, often interrupted proximally, not secund, sometimes with ascending, straight or arching, elongate branches (like main axis).

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

pappi 3 mm.

(tan) ca. 2.5 mm, glabrous;

pappi 3 mm.

= 18, 36.

= 18.