Flora of North America species comparison

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

1–5+, ascending to erect, glabrous or moderately hairy in arrays.

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.

rosettes present at flowering, often in large numbers;

basal and proximal cauline tapering to long-winged petioles, blades oblanceolate to elongate-elliptic, 140–300 (including petioles) × 33–63 mm, gradually reduced distally, somewhat fleshy-rubbery (fresh), margins serrate (teeth 8–18), apices acuminate, abaxial faces glabrous, adaxial glabrous or sparsely strigose;

mid to distal cauline sessile, blades narrowly lanceolate, 35–72 × 9–16 mm, gradually reduced into arrays, tapering to bases, margins entire to slightly serrate, apices acuminate, faces glabrous or sparsely hairy.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

5–12 mm, glabrate to sparsely strigose;

bracteoles 0(–1).

narrowly campanulate, 2.5–3.5 mm.

campanulate, 10–11 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

6–13;

laminae 3.3–5 × (1.5–)2–3(–3.5) mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

12–29;

corollas 3.7–5.1 mm, lobes 1.5–2.3 mm.

in 3–4 series, strongly unequal;

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

in 3–4 series, unequal, outermost ovate, 2.3–3.6 mm, 1-nerved, apices obtuse to acute, innermost linear-oblong, 1–3-nerved (on at least some involucres), apices obtuse to blunt.

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

20–230 (1–10 per branch), in leafy, short, axillary and terminal, racemo-paniculiform clusters 8–41(–47) cm.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

(obconic) 2–2.6 mm, glabrous or sparsely strigose;

pappi 4.8–5.7 mm.

= 18.

= 108, 126.