Flora of North America species comparison

1–10+, erect, glabrous.

1–3, terete, shallowly multicostate, glabrous, sparsely to moderately hirtellous distally (arrays).

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 and proximal cauline winged-petiolate;

blades mostly spatulate to oblanceolate, 100–150 × 15–32 mm, tapering, margins distally coarsely but shallowly serrate, apices acute to narrowly rounded, often narrowed to short, often brown callused tips;

mid to distal cauline progressively more narrowly oblanceolate and acute, then to elliptic or lanceolate-elliptic, 35–60 × 6–10 mm, reduced distally, grading into widely ascending to spreading or reflexed bracts;

faces abaxially pale, midnerves raised, deep green, level reticulum of branch nerves, margins entire, ciliate, adaxially deep green with only impressed midnerve evident.

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

stiffly, widely ascending, angulate, slightly compressed, stubby-bracteolate;

bracts grading into phyllaries, sparsely hirtellous.

narrowly campanulate, 4.5–6 mm.

turbinate, 8–12 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

6–10;

laminae 3–4 mm.

6–10;

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

11–14;

corollas 6 mm, lobes ca. 2 mm.

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

(in 3–4 series) 1–1.3 mm wide, unequal, pilose-ciliate;

outer mostly green, oblong, blunt, inner spatulate or linear-oblanceolate.

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

10–50 (1–5+ per branch), in racemiform or narrowly paniculiform arrays, mostly with primary branches widely to narrowly ascending, proximalmost usually longest.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

cylindric to somewhat compressed-obconic, 1.5–4 mm, typically 5-ribbed, glabrous, abruptly narrowed to short “neck” surmounted by narrow, brownish pappus disc;

pappi (white) 3–4 mm.

= 18.

= 36.