Flora of North America species comparison

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

1–10+, erect, slender to stout (tall shoots), glabrous.

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 often persistent, also present as new rosettes at flowering, tapering to winged petioles to 250 mm, blades narrowly ovate to lanceolate, 50–150 × 15–45 mm, apices obtuse to acute, faces glabrous;

proximal cauline similar, reduced distally (petioles becoming less developed);

distal sessile, blades prominently 1-nerved, ovate to lanceolate, 75–100 × 8–12 mm, much reduced distally, margins entire, flat, apices acute.

0.5–2 mm;

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

6.3–8.5 mm, glabrous;

bracteoles 3, linear to lanceolate, sometimes grading into phyllaries.

narrowly campanulate, 3–5 mm.

campanulate, 4–5 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

6–8;

laminae 4.6–5 × 0.5–0.7 mm.

4–6;

corollas 3 mm, lobes 1 mm.

8–20;

corollas 4–4.5 mm, lobes 0.6–1 mm.

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

(14–18) in 3–4 series, broadly linear to ovate, unequal, obtuse, obscurely striate.

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

10–500+ in corymbiform arrays, branches glabrous.

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

pappi 3 mm.

(obconic) 1.6–2.2 mm, glabrous;

pappi 2.5–3 mm (apically clavate).

= 18, 36.

= 18.