Flora of North America species comparison

1(–5), erect, glabrous proximally to strigillose in arrays.

1–25 (–50+), erect, proximally glabrous or sparsely to moderately canescent-villous, distally densely so.

basal and proximal cauline (sometimes withering by flowering) tapering to winged petioles, blades lanceolate to ovate-elliptic, 50–300 (including petiole) × 12–80 mm (sometimes firm), margins sharply serrate to crenate or entire, faces glabrate to sparsely strigillose;

mid to distal cauline sessile, blades narrowly ovate to lanceolate or elliptic, 25–90 × 5–30 mm, gradually reduced distally, margins serrulate to entire (distally), ciliate, faces glabrous or sparsely scabroso-strigose.

basal 0;

proximal cauline sessile, blades narrowly to broadly oblanceolate, 100–150 × 15–23 mm, tapering to bases, margins subentire to coarsely sharply serrate, 3-nerved, sometimes obscurely so, apices acute to acuminate, abaxial faces glabrate to sparsely short villous, adaxial glabrous;

mid to distal cauline sessile, blades lanceolate to narrowly elliptic, (50–)90–120(–150) × (7–) 11–23(–35) mm, largest near mid stem, then somewhat reduced distally in arrays, margins sharply and coarsely to finely serrate or entire, usually becoming less serrate near arrays, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves, distalmost (below arrays) sometimes sparsely to moderately minutely stipitate-glandular.

1.5–3 mm, sparsely to moderately scabroso-strigillose;

bracteoles linear, grading into phyllaries, scattered along peduncles, clustered near heads.

1–4 mm, villoso-hirtellous, sometimes minutely stipitate-glandular;

bracteoles 0–2, linear-lanceolate, sometimes minutely stipitate-glandular.

narrowly campanulate, 4–6.5 mm.

campanulate, (2–)2.3–3.8(–5) mm.

(2–)3–7(–9);

laminae 3–4 × 0.5–1 mm.

(7–)10–16(–22);

laminae (0.5–)0.9–1.6(–2.2) × ca. 0.2–0.5 mm.

6–16;

corollas 2.5–4 mm, lobes 0.5–1.2 mm.

(2–)5–9(–13);

corollas ca. (2–) 2.5–3.8(–5) mm, lobes (0.4–)0.6–1(–1.4) mm.

in 3–4 series, appressed, strongly unequal, outer ovate, mid and inner lanceolate, (midnerves often raised and thick) apices acute to obtuse or rounded, glabrous.

in 3–4 series, deltate-lanceolate, unequal (outer 1/4–1/2 length of inner), margins sparsely villoso-ciliate, sometimes minutely stipitate-glandular apically or basally, apices acute to attenuate, glabrous or sparsely to moderately, minutely stipitate-glandular apically, sometimes over much of faces.

15–300+, not secund, in usually dense, sometimes open, elongate, paniculiform to thyrsiform arrays, (5–)10–45 × (2–)3–7(–12) cm;

branches strongly ascending, often racemiform.

14–800+, in sometimes secund, broadly thyrsiform or secund pyramidal arrays, usually leafy proximally, branches ascending or sometimes arching-spreading, leaves often minutely stipitate-glandular.

(narrowly obconic) 1.6–2.5 mm, glabrous;

pappi 3–4.5 mm.

(narrowly obconic) 0.6–1.2 mm, strigillose;

pappi 2.5–3.3 mm.