Flora of North America species comparison

1–5+, sparsely to moderately short strigose or villous.

1–5+, ascending to erect, slender, glabrous;

distal axils bearing short lateral branches with several spreading leaves.

basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate;

cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger nerves.

basal blades mostly linear-oblanceolate, 40–160 × 10–20 mm, smallest (10 mm) nearly spatulate, margins shallowly serrate or subentire, sometimes ciliate, ± strongly 3-nerved, apices obtuse to mostly acute, faces glabrous;

mid and distal cauline spreading to reflexed, blades linear, 15–60 × 1–4 mm, reduced to linear bracts in arrays, glabrous.

1–6 mm, moderately canescent;

bracteoles linear to lanceolate.

1–5 mm, bracts 0–5, linear-lanceolate, 1–3 mm, distal grading into phyllaries.

campanulate, 4.5–5.5 mm.

narrowly campanulate, 3–4 mm.

6–8;

laminae 3–4 × 1–1.5 mm wide.

3–7;

laminae 2–3 × ca. 0.5 mm.

8–14;

corollas 4–5 mm, lobes ca. 1.5 mm.

5–9;

corollas 3–3.5 mm, lobes 0.5–0.8 mm.

in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular.

in 2–3 series, strongly unequal, oblong-lanceolate, obtuse to rounded, glabrous.

5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters.

50–350, secund, in paniculiform arrays, openly secund-pyramidal with proximal branches spreading recurved, or as broad as long with proximal branches widely ascending, recurved (elm-tree shaped).

(reddish brown) 2–3 mm, glabrous;

pappi 4–5 mm.

(obconic) 1 mm (with several prominent ridges), glabrous or slightly hairy distally;

pappi 2–3 mm.

= 18.