Flora of North America species comparison

1–5, sparsely to moderately strigoso-puberulent.

1–10(–50), ascending to erect, glabrous or sparsely strigillose, copiously viscid-resinous in arrays.

basal petioles 3–5 cm, blades oblanceolate or spatulate to ovate or rotund, 2–4 cm (excluding petioles);

cauline (numerous) subsessile or sessile, blades elliptic or lance-elliptic to ovate, mid mostly 25–50(–65) × 10–25 mm, distal much reduced;

branch leaf petioles 1 mm, blades ovate, 5–15 (excluding petioles) × 2–10 mm.

basal gradually tapering to winged petioles, blades oblanceolate, (25–)100–200 × (4–)15–28 mm, membranous, margins shallowly serrate apically (teeth less than 1 mm), finely ciliate, midnerves prominent, faces glabrous, viscid;

rosettes present at flowering, at ends of elongated rhizomes, 1st leaves the smallest;

proximal to mid cauline similar, sessile, blades linear-elliptic, quickly reduced;

mid blades 40–80 × 6–9 mm, reduced distally, margins entire;

distal sessile, blades linear-elliptic to linear, 10–35 × 1–3 mm, reduced in arrays.

linear, 1–3 mm, bracteate.

sparsely strigillose, copiously resinous, naked proximally to bracteolate near heads;

bracteoles usually 1–3.

narrowly campanulate, 3–5 mm.

campanulate, 5–7 mm.

0(–2).

3–5(–7);

laminae 2.5–3.5 × 1–1.5 mm.

4–8;

corollas 3 mm, lobes 1 mm.

10–16;

corollas 5–6 mm, lobes 1–1.5(–1.8) mm.

in 3–4 series, lanceolate, strongly unequal, margins ciliate, apices acute, glabrous.

in 3–4 series, strongly unequal, apices obtuse, rounded to slightly cuspidate, ciliate, sparsely, finely strigose, obscured by exudate, copiously resinous;

outer ovate (1.5–2 mm), mid narrowly ovate (3–4 × 1.5 mm), inner linear-lanceolate.

75–200 in open paniculiform arrays, branches divaricate, ascending to recurved, weakly to strongly secund, to 50 cm, secondary branches less than 3 cm.

50–200 (1–15 per branch), in narrowly thyrsiform, paniculiform arrays, 9–30 × 4–5 cm, longer branches ascending, 2–10 cm.

2.5–3 mm, moderately short-strigose;

pappi 2 mm.

fusiform to narrowly obconic, 3–5 mm, ribs 5–8, golden brown, darker than intercostal portions, thin, glabrous;

pappi 4–5 mm (sometimes strongly clavate).

= 18.

= 18.