Flora of North America species comparison

1–10+, erect, glabrous.

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

distal axils bearing short lateral branches with several spreading leaves.

basal and proximal cauline usually withering by flowering (other rosettes may be present), tapering to long, winged petioles, blades often recurved, linear- lanceolate or -oblanceolate, 100–240 × 8–16 mm, folded along midrib (V-shaped in cross section), bases usually with (2–)3–8 prominent lateral nerves, apices acute to obtuse, faces glabrous;

mid to distal cauline sessile, blades recurved, linear-lanceolate, 50–70 × 8–11 mm, reduced distally, folded, bases with prominent lateral 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.

2.8–4 mm, moderately short-hispido-strigose, lanceolate bracteoles 0–1.

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

narrowly campanulate, 4.5–6 mm.

narrowly campanulate, 3–4 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

3–7;

laminae 2–3 × ca. 0.5 mm.

6–10;

corollas 4.5–5.2 mm, lobes 0.7–1.8 mm.

5–9;

corollas 3–3.5 mm, lobes 0.5–0.8 mm.

(14–18) in 3–4 series, unequal, obtuse, broad, striations weak, obtuse to rounded, glabrous.

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

30–450 in corymbiform to somewhat paniculiform with rounded corymbiform branches (robust plants) arrays, branches and peduncles strigillose.

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).

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

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

pappi 2–3 mm.

= 18.

= 18.