Flora of North America species comparison

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

1–5+, glabrous, sparsely 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 petiolate;

blades broadly elliptic to ovate, 100–350 × 60–120 mm (including petioles), bases truncate to obtuse, apices acute to acuminate, margins sharply serrate, glabrous;

distal cauline blades spreading to ascending, linear-elliptic, 30–50 × 6–15 mm.

0.5–2 mm;

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

1.5–3 mm, glabrate to moderately short hispido-strigose, bracteoles 1–5, linear-lanceolate grading into phyllaries.

narrowly campanulate, 3–5 mm.

campanulate, (4.5–)5–7 mm (much exceeded by pappi).

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

4–9;

laminae 4–5 × 1.5–2.5 mm.

4–6;

corollas 3 mm, lobes 1 mm.

9–11;

corollas 4–5 mm, lobes ca. 1.5 mm.

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

in 3–4 series, linear-lanceolate, strongly unequal.

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

25–50+, in elongate, paniculiform arrays, proximal branches recurved-secund, sometimes elongate.

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

pappi 3 mm.

(brown, ribs dark brown) 3 mm, sparsely short-strigose;

pappi 3–4 mm.

= 18, 36.

= 54.