Flora of North America species comparison

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

1–20+, erect, glabrate proximally or sparsely strigoso-villous, becoming more densely so distal to mid stem.

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;

proximal to mid cauline usually withering by flowering, tapering to sessile bases, blades narrowly ovate-lanceolate, 50–190 × 5–30 mm, margins sharply serrate, 3-nerved, apices acuminate, abaxial faces glabrous or more commonly hairy along main nerves, adaxial glabrous or slightly scabrous;

mid to distal similar, 30–50(–120) × 8–12 mm, largest near mid stem, reduced distally, margins usually serrate or serrulate (teeth 3–8), sometimes entire proximal to arrays.

0.5–2 mm;

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

3–3.4 mm, bracteoles 0–3, linear-triangular.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 1.7–2.5(–3) mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

(5–)8–14(–18);

laminae 0.5–1.5 × 0.15–0.3(–0.5) mm.

4–6;

corollas 3 mm, lobes 1 mm.

(2–)3–6(–8);

corollas 2.2–2.8(–3) mm, lobes 0.4–0.8(–1) mm.

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

in 3–4 series, strongly unequal, acute to obtuse;

outer lanceolate, inner linear-lanceolate.

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

(70–)150–1300+, secund, in secund pyramidal-paniculiform arrays (obscurely so and club-shaped thyrsiform in small plants or shoots with small arrays), branches divergent and recurved, branches and peduncles hairy.

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

pappi 3 mm.

(narrowly obconic) 1–1.5 mm (ribbed), sparsely strigose;

pappi 1.8–2.2 mm.

= 18, 36.