Flora of North America species comparison

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

1–6, decumbent to ascending, finely and densely puberulent.

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 present at flowering;

basal and proximal petiolate, blades oblanceolate to narrowly obovate or spatulate, 20–100 × 5–20 mm, basal much smaller than proximal, margins serrate or entire, somewhat 3-nerved, apices obtuse to acute, cuspidate, faces moderately to densely finely puberulent;

mid and distal cauline sessile, blades oblanceolate to elliptic to base, 1 prominent nerve, 10–30 × 4–12 mm, greatly reduced distally, attenuate, margins entire or distally serrate, apices acute, faces densely finely puberulent.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

2–7 mm, moderately puberulent;

bracteoles 0–2, elliptic, minute.

narrowly campanulate, 2.5–3.5 mm.

campanulate, 4–6 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

(5–)6–10 (fewer than number of disc florets);

laminae ca. 3 × 1.3–1.6 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

8–20;

corollas 4–4.5 mm, lobes 0.8–1.1 mm.

in 3–4 series, strongly unequal;

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

in 3–4 series, oblong, strongly unequal, margins ciliate, apices blunt, glabrous.

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

30–100, in broadly corymbiform (modified paniculiform) arrays, sometimes somewhat secund.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

(narrowly obconic) 2–2.8 mm, sparsely strigose;

pappi 3.5–4 mm.

= 18.

= 18.