Flora of North America species comparison

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

1, ascending-erect, softly short villous.

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 winged-petiolate petioles (petioles 1/2+ leaf length), blades broadly ovate (or subcordate) to elliptic, 50–100(–160) × 30–40 mm, margins shallowly serrate-crenate, apices acute to obtuse, soft short-villous;

mid and distal cauline subpetiolate or sessile, blades ovate to elliptic, 20–40 × 5–15 mm, greatly reduced, becoming narrowly elliptic.

0.5–2 mm;

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

slender.

narrowly campanulate, 3–5 mm.

campanulate, 4–5 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

usually 7–12;

laminae 3–6 × 1.5–2 mm.

4–6;

corollas 3 mm, lobes 1 mm.

usually 14–27;

corolla tubes 4 mm, lobes 0.8–1 mm.

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

in 3–4 series, broadly lanceolate, unequal, glabrate or sparsely short-strigose.

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

50–100, in paniculiform arrays, proximal branches obscurely to evidently recurved-secund.

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

pappi 3 mm.

1.5–2.5, sparsely strigose;

pappi ± 3 mm (shorter than corollas).

= 18, 36.

= 18.