Flora of North America species comparison

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

1–10(–30+), decumbent to erect, slender, tufted, proximally glabrous or sparsely hairy, densely short-hispido-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 petiolate;

petioles winged, margins ciliate;

blades linear-oblanceolate to spatulate, 10–170 × 3–30 mm, serrate to crenate near apices;

distal cauline sessile;

blades sometimes subclasping stems, ovate to linear-lanceolate, 16–20 × 7–11 mm, margins often distinctly ciliate.

0.5–2 mm;

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

5–6 mm, villous;

bracteoles 0–2, linear-lanceolate to lanceolate.

narrowly campanulate, 3–5 mm.

4–8 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

12–18;

laminae 3–4 × 0.5–1 mm.

4–6;

corollas 3 mm, lobes 1 mm.

10–35;

corollas 3–5 mm, lobes 0.3–1 mm.

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

unequal to subequal, outer linear-lanceolate to lanceolate, lengths ± 2/3 inner, margins ciliate, apices acute to attenuate.

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

4–75(–100+), not secund, in dense, round-topped corymbiform arrays;

branches white villous.

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

pappi 3 mm.

1.5–4 mm, sparsely to moderately strigose;

pappi 3–4 mm (inner bristles clavate).

= 18, 36.

= 18, 36.