Flora of North America species comparison

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

1–5(–10), ascending to erect (tall stems sometimes arching), branching proximal to arrays only in damaged stems, 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 subsessile to winged-petiolate, petioles of proximalmost nearly completely sheathing stems, blades oblanceolate to elliptic-lanceolate, 60–600 × 3–20(–50) mm, thick and firm, obtuse to rounded, bases tapering, margins entire or obscurely serrate, glabrous;

proximal to distal cauline sessile, ascending to nearly appressed, lanceolate-oblong to linear, 10–30 × 2–4 mm, abruptly reduced proximally, then gradually so distally, margins entire, apices acute, faces glabrous.

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

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

slender, 2–10 mm, glabrous or sparsely strigillose;

bracteoles linear.

narrowly campanulate, 2.5–3.5(–4) mm.

narrowly campanulate, 4–6 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

3–7, 1.5–2 × ca. 0.5 mm.

(3–)5–11(–16);

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

usually 8–12;

corollas 3–5 mm, lobes 1–1.2 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, oblong, unequal, acute to rounded, 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.

15–250, sometimes secund on proximal branches and secund terminus, in linear, narrowly elongate paniculiform to elongate pyramidal-secund or thyrsiform-paniculiform and not secund arrays, sometimes with a few elongate proximal, arching branches.

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

pappi 2.5–3.3 mm.

1.5–2.5 mm, sparsely to moderately strigose;

pappi 3 mm.

= 18, 36.