Flora of North America species comparison

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

1–10+, erect, proximally glabrous, increasingly puberulent distally into 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 0;

mid and distal cauline numerous (sometime 100+ per stem), crowded, sessile or subsessile;

blades linear-elliptic, mostly 50–120 × 6–12 mm, tapering at both ends, margins remotely serrulate or subentire, 3-nerved, faces glabrous or sometimes puberulent abaxially on midnerves.

0.5–2 mm;

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

1–3 mm, sparsely strigose;

bracteoles linear, 1–3.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 2–3 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

mostly 7–11, 1–2 × 0.1–0.2 mm.

4–6;

corollas 3 mm, lobes 1 mm.

2–7;

corollas 2–3 mm, lobes 0.4–0.6 mm.

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

in 3–4 series, linear-lanceolate, strongly unequal, midribs raised, enlarged apically, apices acute to usually obtuse or rounded, apically ciliate.

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

80–900+, in paniculiform arrays, branches recurved, secund.

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

pappi 3 mm.

(narrowly obconic) 1–1.5 mm, sparsely strigillose;

pappi 2–2.5 mm.

= 18, 36.

= 18, 36.