Flora of North America species comparison

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

1–5+, flexuous, sparsely to 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;

basal and proximal cauline tapering to winged petioles, blades ovate, (70–)100–140(–180) × (27–)40–60(–80) mm (petioles 1/4–1/2 total leaf length), margins serrate-serrulate [teeth (14–)21–33(–45)], abaxial faces glabrous or moderately hairy, more densely so on nerves, adaxial glabrous or sparsely hairy;

mid to distal cauline sessile, blades narrowly ovate to lanceolate, 38–90(–150) × 10–30(–55) mm, reduced distally, becoming lanceolate in arrays, bases tapering, margins entire to serrate, apices acuminate to cuspidate, faces glabrous or sparsely hairy, abaxial glabrous or moderately hairy, more densely so along nerves.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

0.5–5 mm, moderately to densely strigose;

bracteoles 1–3, lanceolate, usually near base of involucres and grading into phyllaries.

narrowly campanulate, 2.5–3.5 mm.

campanulate, 4.5–7(–8) mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

1–5;

laminae (2–)2.5–4(–5) × 0.7–2 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

4–8(–11);

corollas 2–3(–4) mm, lobes 1–1.6(–2) mm.

in 3–4 series, strongly unequal;

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

in ca. 3 series, strongly unequal, outermost 1–2 mm, innermost 3.7–4.7(–5.7) mm, linear-oblong, 1-nerved, apices obtuse to acute.

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

25–250, in short axillary and terminal racemiform clusters, lateral panicles (2–)7–31(–56) cm.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

(obconic) 1–2(–3) mm, moderately to densely strigose;

pappi 3–4.5 mm.

= 18.

= 18, 36.