Flora of North America species comparison

1–10+, erect, glabrous.

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

basal and proximal cauline usually withering by flowering (other rosettes may be present), tapering to long, winged petioles, blades often recurved, linear- lanceolate or -oblanceolate, 100–240 × 8–16 mm, folded along midrib (V-shaped in cross section), bases usually with (2–)3–8 prominent lateral nerves, apices acute to obtuse, faces glabrous;

mid to distal cauline sessile, blades recurved, linear-lanceolate, 50–70 × 8–11 mm, reduced distally, folded, bases with prominent lateral nerves.

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.

2.8–4 mm, moderately short-hispido-strigose, lanceolate bracteoles 0–1.

0.5–2 mm;

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

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 3–5 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

6–10;

corollas 4.5–5.2 mm, lobes 0.7–1.8 mm.

4–6;

corollas 3 mm, lobes 1 mm.

(14–18) in 3–4 series, unequal, obtuse, broad, striations weak, obtuse to rounded, glabrous.

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

30–450 in corymbiform to somewhat paniculiform with rounded corymbiform branches (robust plants) arrays, branches and peduncles strigillose.

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

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

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

pappi 3 mm.

= 18.

= 18, 36.