Flora of North America species comparison

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

1 usually, erect, round, proximally glabrous, strigose 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 abruptly to winged, thin petioles, blades broadly ovate, 100–300 × 30–100 mm, margins sharply serrate, apices acute to acuminate, adaxial faces glabrous or slightly scabrous, or sometimes strigose or strigillose;

mid to distal cauline sessile, lanceolate, 50–72 × 10–14 mm, reduced distally, becoming entire.

0.5–2 mm;

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

1.5–3 mm, glabrous or moderately short hispido-strigose, bracteoles 1–5, lanceolate-oblong, often grading into phyllaries.

narrowly campanulate, 3–5 mm.

2.5–4.5(–5) mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

2–8;

laminae 4–4.5 × 0.4–0.6 mm.

4–6;

corollas 3 mm, lobes 1 mm.

8–20;

corollas 3.5–4 mm, lobes 0.6–1.5 mm.

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

in 3–4 series, unequal;

outer ovate, acute, inner linear-oblong, ciliate, obtuse.

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

25–250, secund, in open, leafy, paniculiform arrays with recurved branches (sometimes elongate), branches and peduncles hairy.

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

pappi 3 mm.

1.5–2 mm, distinctly ridged, glabrous or strigose distally;

pappi 3–3.5 mm.

= 18, 36.