Flora of North America species comparison

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

1–20+, erect, slender, glabrous proximally, hispid distally.

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.

basal and proximal cauline persistent, subpetiolate to sessile, blades sometimes 3-nerved, linear to linear-lanceolate, 60–100 × 7–10 mm, stiff, flat, margins entire or subentire, faces glabrous or sparsely hairy;

mid to distal cauline sessile, blades linear oblanceolate to linear, 20–40 × 3–5 mm, reduced distally, margins entire.

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

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

29–36.5 mm, strigillose;

bracteoles linear.

campanulate, (2–)2.3–3.8(–5) mm.

5–6 mm.

(7–)10–16(–22);

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

10–20, usually white, rarely pale yellow (conspicuous);

laminae 7–7.3 × 1.4–1.6 mm.

(2–)5–9(–13);

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

30–36;

corollas 3.8–4.1 mm, lobes 0.5–0.7 mm.

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.

in 4–5 series, usually prominently 1-nerved, linear, strongly unequal, outer acute, inner acute to obtuse, glabrous.

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.

1–25(–50), in corymbiform arrays.

(narrowly obconic) 0.6–1.2 mm, strigillose;

pappi 2.5–3.3 mm.

(obconic) 1–1.5 mm (ribbed), glabrous;

pappi 3.4–4 mm (apically clavate).

= 18.