Flora of North America species comparison

1–10, ascending to erect, uniformly finely strigillose-villous distal to mid.

1, erect, slender.

basal cauline nearly always withering well before flowering, linear-oblanceolate, smaller than proximal mid cauline, serrate;

proximal persisting, sometimes brown-black after senescence, often twisted;

proximal to distal numerous (100+ on tall stems), crowded, sessile, blades (bright green) linear to linear-lanceolate, 20–70 × 2–7(–10) mm, margins remotely serrulate (proximal) to entire or with 1–2 minute serrations (distal), obscurely 3-nerved, one or both faces glabrous or finely strigillose.

basal tufted, tapering, petiolate, petioles 20–100 mm, blades oblanceolate or elliptic, 30–120 (including petiole) × 5–15 mm, obtuse to rounded;

cauline sessile, blades oblanceolate to linear-lanceolate, 5–80 × 4–1.3 mm, abruptly reduced proximally, becoming bractlike proximal to arrays.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

2–25 mm;

bracteoles crowded, linear, 1–2 mm, grading into phyllaries.

narrowly campanulate, 2.5–3.5 mm.

broadly campanulate, 3.5–5 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

6–14;

laminae 2–3 × 1–2 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

mostly 12–30;

corollas 3.5–4 mm, lobes 0.5–0.75 mm.

in 3–4 series, strongly unequal;

outer ovate, acute, inner oblong, obtuse to rounded.

in 3–4 series, linear-lanceolate, strongly unequal, acute to slightly acuminate or cuspidate, glabrous.

100–300+, in short to elongate, pyramidal paniculiform arrays, branches recurved, secund.

5–20(–50), in slender racemiform or paniculiform arrays, sometimes secund and apically recurved, more often erect and not secund, sometimes compact and somewhat rounded to only slightly elongate.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

1.5–2 mm, sparsely finely strigose;

pappi (basally broader and flattened, fused to varying lengths) 3–4 mm (somewhat clavate).

= 18.

= 36.