Flora of North America species comparison

1–10+, erect, glabrous.

glabrous, viscid-resinous.

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 petiolate;

blades tapering to petioles, linear to elliptic-oblanceolate, 100–150 (–220) (including petiole) × 5–10(–15) mm, margins serrate, apices acute to obtuse; the outer much smaller;

mid and distal similar to basal, becoming sessile, mid 40–60 × 2–4 mm, distally reduced (in arrays) to linear bracts 10–35 × 1–2 mm, entire.

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

2–6 mm, glabrous, sometimes resinous-glandular;

bracteoles linear, 0–5.

narrowly campanulate, 4.5–6 mm.

campanulate, 4.5–6 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

3–6;

laminae 3.5–5 × 1 mm.

6–10;

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

mostly 8–10;

corollas 4.5–5.5 mm, lobes 0.8–1.2 mm.

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

(in 3–4 series) lanceolate to linear-lanceolate, strongly unequal, apices rounded, glabrous, somewhat resinous.

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

in paniculiform arrays, 15–30 cm, branches ascending, 2–10 cm, not secund in erect stems, secund in arching ones.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

obconic, ca. 2.5 mm, shallowly ribbed, glabrous;

pappi 4–5 mm.

= 18.

= 18.