Flora of North America species comparison

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

1–5+, ascending to erect, glabrous or moderately hairy 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.

rosettes present at flowering, often in large numbers;

basal and proximal cauline tapering to long-winged petioles, blades oblanceolate to elongate-elliptic, 140–300 (including petioles) × 33–63 mm, gradually reduced distally, somewhat fleshy-rubbery (fresh), margins serrate (teeth 8–18), apices acuminate, abaxial faces glabrous, adaxial glabrous or sparsely strigose;

mid to distal cauline sessile, blades narrowly lanceolate, 35–72 × 9–16 mm, gradually reduced into arrays, tapering to bases, margins entire to slightly serrate, apices acuminate, faces glabrous or sparsely hairy.

0.5–2 mm;

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

5–12 mm, glabrate to sparsely strigose;

bracteoles 0(–1).

narrowly campanulate, 3–5 mm.

campanulate, 10–11 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

6–13;

laminae 3.3–5 × (1.5–)2–3(–3.5) mm.

4–6;

corollas 3 mm, lobes 1 mm.

12–29;

corollas 3.7–5.1 mm, lobes 1.5–2.3 mm.

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

in 3–4 series, unequal, outermost ovate, 2.3–3.6 mm, 1-nerved, apices obtuse to acute, innermost linear-oblong, 1–3-nerved (on at least some involucres), apices obtuse to blunt.

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

20–230 (1–10 per branch), in leafy, short, axillary and terminal, racemo-paniculiform clusters 8–41(–47) cm.

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

pappi 3 mm.

(obconic) 2–2.6 mm, glabrous or sparsely strigose;

pappi 4.8–5.7 mm.

= 18, 36.

= 108, 126.