Flora of North America species comparison

1–20+, erect, proximally sparsely to moderately strigoso-villous, distally usually moderately to densely so.

1–10+, essentially glabrous.

basal 0;

proximal cauline sessile, blades narrowly to broadly oblanceolate, 35–75(–100) × (6–)7.5–14(–20) mm, proximal much smaller, tapering to bases, margins subentire or finely serrulate to coarsely, sharply serrate (teeth 0–9 per side), ciliate, 3-nerved, sometimes obscurely so, apices acute, abaxial faces glabrate to sparsely short-strigose, adaxial glabrous;

mid to distal cauline sessile, blades oblanceolate, becoming lanceolate distally, 20–60 × 4–8(–11) mm, largest near mid stem, somewhat to much reduced distally, margins entire or finely serrulate, rarely serrate (teeth 1–8 per side), usually becoming entire to sparsely serrulate distally, ciliate, apices acute, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves.

basal and proximal cauline tapering to short petioles, blades oblanceolate, 50–70 × 10–20 mm, margins serrate, scabroso-strigose, apices acute to acuminate, faces glabrous;

mid and distal cauline subpetiolate or sessile, blades elliptic-lanceolate, 30–70 × 7–15 mm, gradually reduced distally, tapering to bases, margins serrate, scabroso-strigose;

branch leaves similar, reduced to bracts distally.

2–7 mm, sparsely to moderately short strigoso-villous;

bracteoles 1–3, linear, rarely minutely stipitate-glandular.

2–5 mm, bracteolate, glabrous;

bracteoles grading into phyllaries.

narrowly campanulate, 2.5–3.5(–4) mm.

narrowly campanulate, 3–5 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

1–4;

laminae 1–2 × 0.5–0.8 mm.

(3–)5–11(–16);

corollas 2.6–3.7(–4) mm, lobes 0.5–1.2 mm.

4–6;

corollas 2.5 mm, lobes 1 mm.

in 3–4 series, strongly unequal, margins sparsely long ciliate, acute, faces glabrous, rarely sparsely minutely stipitate-glandular;

outer lanceolate, inner linear-lanceolate.

in 3–4 series, linear-lanceolate, strongly unequal, acute to ± attenuate, glabrous.

12–500+, sometimes secund, in short to long, thyrsiform or narrowly secund-pyramidal paniculiform arrays, usually congested, club-shaped to rarely wand-shaped, (2.5–) 10–20 × (2–)4–8(–10) cm, branches usually ascending or sometimes arching spreading.

160–480 in paniculiform arrays, with a strongly secund, primary, arching axis and nearly always 4–5(–8) leafy, elongate, arching, secund, proximal branches.

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

pappi 2.5–3.3 mm.

1.5–2 mm (6–9 ribs), sparsely strigose, more so apically;

pappi 1.5–2 mm.

= 18, 36.

= 18.