Flora of North America species comparison

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

1–10(–30+), decumbent to erect, slender, tufted, proximally glabrous or sparsely hairy, densely short-hispido-strigose in arrays.

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 petiolate;

petioles winged, margins ciliate;

blades linear-oblanceolate to spatulate, 10–170 × 3–30 mm, serrate to crenate near apices;

distal cauline sessile;

blades sometimes subclasping stems, ovate to linear-lanceolate, 16–20 × 7–11 mm, margins often distinctly ciliate.

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

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

5–6 mm, villous;

bracteoles 0–2, linear-lanceolate to lanceolate.

narrowly campanulate, 2.5–3.5(–4) mm.

4–8 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

12–18;

laminae 3–4 × 0.5–1 mm.

(3–)5–11(–16);

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

10–35;

corollas 3–5 mm, lobes 0.3–1 mm.

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

outer lanceolate, inner linear-lanceolate.

unequal to subequal, outer linear-lanceolate to lanceolate, lengths ± 2/3 inner, margins ciliate, apices acute to attenuate.

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.

4–75(–100+), not secund, in dense, round-topped corymbiform arrays;

branches white villous.

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

pappi 2.5–3.3 mm.

1.5–4 mm, sparsely to moderately strigose;

pappi 3–4 mm (inner bristles clavate).

= 18, 36.

= 18, 36.