Flora of North America species comparison

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

1–10+, erect (usually simple), rough-puberulent or shortly spreading hirsute, or proximally glabrate.

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 petioles 1.5–7 mm, blades spatulate to lanceolate or subrhombic, mostly 50–109 × 15–40 mm, bases tapering, glabrous, margins sharply serrate, ciliate, apices acuminate;

mid and distal sessile, blades lanceolate to subrhombic, much reduced distally, margins serrulate becoming entire distally, glabrous.

0.5–2 mm;

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

1–7, short-strigose;

bracts leaflike, 5–15 mm.

narrowly campanulate, 3–5 mm.

campanulate, 5–6 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

8–10(–15);

laminae 2–3.5 mm.

4–6;

corollas 3 mm, lobes 1 mm.

20–60;

corollas 3.5–4.5 mm, lobes 1.5–2 mm.

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

(in 3–4 series) lanceolate, unequal (midnerves swollen), acute to acuminate (tips dark green).

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

15–50+ in compactly rounded corymbiform arrays, becoming paniculiform in robust plants.

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

pappi 3 mm.

2–3 mm, sparsely strigose to glabrate;

pappi (of 12–22 bristles) about 3 mm.

= 18, 36.

= 54.