Flora of North America species comparison

basally decumbent, abruptly erect, usually glabrous or glabrate, rarely sparsely strigose on proximal 1/2, or hirsutulous proximally and strigose distally, or distally densely hirsutulous (hairs usually ± deflexed, sometimes loosely antrorsely ascending; var. keilii), eglandular.

erect, sparsely piloso-hispid (hairs spreading), sometimes strigose distally, eglandular.

cauline;

blades narrowly oblong-oblanceolate to linear, 20–60 × 2–7 mm, seldom reduced distally, margins entire, faces glabrous, sparsely strigose, or hispid, eglandular.

basal (usually withering by flowering) and cauline;

basal blades mostly lanceolate to oblanceolate or ovate, 15–80 × 3–20 mm, margins coarsely serrate to nearly entire, faces sparsely strigoso-hirsute, eglandular;

cauline lanceolate to oblong, little reduced proximal to midstem.

4.5–6.5 × 7–12 mm.

3–5 × 6–12 mm.

80–125;

corollas white, 4–10 mm, laminae tardily coiling.

0.

3.8–4.5 mm (throats slightly indurate, not inflated).

2–2.8 mm.

in 3–5 series (margins broad, stramineous, midveins orange, thin), glabrous, usually eglandular, rarely minutely glandular.

in 2–3(–4) series, sparsely villous or hirsuto-villous, minutely glandular.

(discoid) (1–)2–15 in corymbiform arrays.

ca. 5–50+ in loosely paniculiform or corymbiform arrays.

2–3 mm, 2-nerved, faces glabrous;

pappi: outer of setae, inner of 28–45 bristles.

0.8–1 mm, 2-nerved, faces sparsely strigose;

pappi: outer minute crowns of setae or narrow scales, inner 0 (rays) or of 8–11 bristles (disc).

= 27.