Flora of North America species comparison

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

1–10+, ascending-erect, glabrous proximally, usually moderately scabrous-puberulent distally.

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 often present at flowering as new rosettes;

basal and proximal cauline often with distal portions withering by flowering, long-petiolate, blades shiny, ± 3-nerved, linear to oblanceolate, (30–)100–250 × (2–)5–15 mm, margins entire or sparsely serrulate, faces glabrous;

mid and distal cauline sessile, blades linear-lanceolate to linear, 15–80 × 1–7 mm, much reduced distally, faces glabrous or scabrous.

0.5–2 mm;

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

usually moderately to densely strigillose, sometimes sparsely so or glabrous;

bracts minute.

narrowly campanulate, 3–5 mm.

campanulate, 4.5–6 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

1–4;

laminae 3–5 × 1–1.5 mm.

4–6;

corollas 3 mm, lobes 1 mm.

7–13;

corollas 4–5 mm, lobes 0.5–1 mm.

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

in 3–4 series, broadly oblong, unequal, firm, striately nerved, rounded, glabrous.

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

20–150+ in compactly corymbiform arrays, sometimes somewhat rounded.

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

pappi 3 mm.

(dark brown, obconic, full) 2–3 mm (7–10 nerved), glabrous;

pappi 4–5 mm (clavate).

= 18, 36.

= 18.