Flora of North America species comparison

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

1–10(–30+), decumbent to erect, slender, tufted, proximally glabrous or sparsely hairy, densely short-hispido-strigose 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.

basal and proximal cauline petiolate;

petioles winged, margins ciliate;

blades linear-oblanceolate to spatulate, 10–170 × 3–30 mm, serrate to crenate near apices;

distal cauline sessile;

blades sometimes subclasping stems, ovate to linear-lanceolate, 16–20 × 7–11 mm, margins often distinctly ciliate.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

5–6 mm, villous;

bracteoles 0–2, linear-lanceolate to lanceolate.

narrowly campanulate, 2.5–3.5 mm.

4–8 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

12–18;

laminae 3–4 × 0.5–1 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

10–35;

corollas 3–5 mm, lobes 0.3–1 mm.

in 3–4 series, strongly unequal;

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

unequal to subequal, outer linear-lanceolate to lanceolate, lengths ± 2/3 inner, margins ciliate, apices acute to attenuate.

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

4–75(–100+), not secund, in dense, round-topped corymbiform arrays;

branches white villous.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

1.5–4 mm, sparsely to moderately strigose;

pappi 3–4 mm (inner bristles clavate).

= 18.

= 18, 36.