Flora of North America species comparison

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

1–5+, erect, slender, glabrous.

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 tapering to long, winged petioles, blades ovate, to 7–22 mm wide, margins entire, apices acute, faces glabrous;

proximal cauline tapering to winged petiole-like bases partially clasping stems, blades sometimes 3-nerved (2 prominent lateral nerves arising proximally and running alongside midnerve for some distance before diverging), linear oblanceolate, 158–177 × 7–22 mm, margins entire, ciliate, apices acute to obtuse, glabrous;

mid to distal sessile, blades linear lanceolate, mid often 3-nerved (obscurely sometimes), distal 1-nerved, 47–100 × 4–10 mm, reduced distally.

0.5–2 mm;

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

5–6.2 mm, sparsely to moderately strigillose;

bracteoles 0–2, linear.

narrowly campanulate, 3–5 mm.

campanulate, (5.5–)6–8(–9) mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

6–12 (pale to bright yellow);

laminae 7.4–7.9 × 0.5–0.6 mm.

4–6;

corollas 3 mm, lobes 1 mm.

8–15;

corollas 4–4.3 mm, lobes 0.9–1.5 mm.

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

in 3–4 series, unequal, linear to oblanceolate, margins ciliate, weakly striate, obtuse to rounded.

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

(2–)5–50(–100+), not secund, in corymbiform arrays, branches and peduncles glabrous or moderately strigillose.

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

pappi 3 mm.

obconic, 1.4–1.8 mm, glabrous, ribs sometimes dark;

pappi of bristles 4–5.5 mm, clavate.

= 18, 36.

= 54.