Flora of North America species comparison

1–20+, erect, proximally sparsely to moderately strigoso-villous, distally usually moderately to densely so.

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

basal 0;

proximal cauline sessile, blades narrowly to broadly oblanceolate, 35–75(–100) × (6–)7.5–14(–20) mm, proximal much smaller, tapering to bases, margins subentire or finely serrulate to coarsely, sharply serrate (teeth 0–9 per side), ciliate, 3-nerved, sometimes obscurely so, apices acute, abaxial faces glabrate to sparsely short-strigose, adaxial glabrous;

mid to distal cauline sessile, blades oblanceolate, becoming lanceolate distally, 20–60 × 4–8(–11) mm, largest near mid stem, somewhat to much reduced distally, margins entire or finely serrulate, rarely serrate (teeth 1–8 per side), usually becoming entire to sparsely serrulate distally, ciliate, apices acute, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves.

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.

2–7 mm, sparsely to moderately short strigoso-villous;

bracteoles 1–3, linear, rarely minutely stipitate-glandular.

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

bracteoles usually 1–3.

narrowly campanulate, 2.5–3.5(–4) mm.

campanulate, 5–7 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

3–5(–7);

laminae 2.5–3.5 × 1–1.5 mm.

(3–)5–11(–16);

corollas 2.6–3.7(–4) mm, lobes 0.5–1.2 mm.

10–16;

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

in 3–4 series, strongly unequal, margins sparsely long ciliate, acute, faces glabrous, rarely sparsely minutely stipitate-glandular;

outer lanceolate, inner linear-lanceolate.

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.

12–500+, sometimes secund, in short to long, thyrsiform or narrowly secund-pyramidal paniculiform arrays, usually congested, club-shaped to rarely wand-shaped, (2.5–) 10–20 × (2–)4–8(–10) cm, branches usually ascending or sometimes arching spreading.

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

(narrowly obconic) 1–1.5 mm, sparsely to moderately strigose;

pappi 2.5–3.3 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, 36.

= 18.