Flora of North America species comparison

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

1–30+, simple, sparsely to densely puberulent proximally to densely so 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 winged-petiolate-subpetiolate (poorly differentiated), blades to winged petioles;

blades oblanceolate, largest to 8 cm, usually smaller, gradually attenuate, margins entire, slightly undulate, sparsely to moderately soft-puberulent, somewhat viscid (stipitate-glands very small); mostly withering by flowering, new rosettes sometimes present;

cauline petiolate (petioles 0.5–1 mm), blades (linear) elliptic proximally to (narrowly) lanceolate or ovate distally, largest 50–80 × 15–25 mm, reduced distally and becoming more ovate, 15–20 mm in arrays, margins entire or serrulate.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

0.5–5(–2.5) mm, densely short hispid-canescent, sparsely to densely stipitate-glandular, ± viscid;

bracts small, grading into phyllaries.

narrowly campanulate, 2.5–3.5 mm.

broadly campanulate, (3.5–)4–5(–5.5) mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

6–10;

laminae ca. 3–5 × 1–2 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

10–20;

corollas 3–4 mm, lobes ca. 1 mm.

in 3–4 series, strongly unequal;

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

in 2–3 series, unequal, oblong to linear-lanceolate, acute to attenuate, sparsely to moderately strigose, especially distally, sparsely to densely stipitate-glandular, ± viscid.

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

1–140, not secund, in thyrsiform-paniculiform arrays, sometimes compact, nearly as wide as tall, and rounded, sometimes appearing almost rounded corymbiform, proximal branches sometimes much elongate, not secund, spreading to ascending.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

1.5–2.5 mm, ± moderately short-strigose;

pappi 3–4 mm.

= 18.

= 18.