Flora of North America species comparison

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

1–50+, erect, glabrous or sometimes sparsely strigose in arrays;

fascicles of small lateral branch leaves often present in axils.

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.

proximal cauline tapering to long, winged petioles, blades oblanceolate to linear-oblanceolate, 50–100(–200) (including petiole) × (5–)10–20(–30) mm, margins entire to serrulate, usually 3-nerved (2 larger lateral nerves), apices acute, mucronate to acuminate and somewhat spinulose, glabrous;

mid to distal cauline sessile, blades lanceolate to linear, 40–60 × (2–)4–14 mm, rapidly reduced distally, margins entire, ciliate, faces glabrous.

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

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

1.4–5 mm, glabrous or sparsely strigose;

bracteoles 0–3+, linear to lanceolate.

narrowly campanulate, 2.5–3.5(–4) mm.

narrowly to broadly campanulate, 2.5–4.5 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

5–14;

laminae 1.5–2(–4) × 0.2–0.5(–0.75) mm.

(3–)5–11(–16);

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

(6–)8–20;

corollas (2–)3–4 mm, lobes 0.4–1 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, strongly unequal, margins ciliate-fimbriate, especially apically;

outer ovate to lanceolate, acute to rounded, inner linear-ovate to oblong or linear-lanceolate, obtuse to rounded.

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.

10–210 in paniculiform arrays, broadly secund-pyramidal or more rhombic to transversely rhombic, (1.5–)3–12(–20) × (1.5–)3–12 cm;

branches glabrous with secund heads spreading and arching, sometimes ascending with non-secund heads.

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

pappi 2.5–3.3 mm.

(obconic) 1–2 mm, glabrous or sparsely strigose;

pappi 2.5–3 mm.

= 18, 36.

= 18, 36.