Flora of North America species comparison

glabrous or densely piloso-puberulent.

glabrous.

basal and proximal cauline 3–5-nerved, linear to narrowly oblanceolate or oblanceolate, 110–220 × 4–10(–12) mm, gradually then abruptly reduced distally (bractlike proximal to heads), essentially glabrous or sparsely pilose to densely piloso-puberulent, weakly gland-dotted (bases of basal usually fibrous-persistent).

basal and proximal cauline 1-nerved, linear-oblanceolate to narrowly oblanceolate, 80–210 × 2–5(–10) mm, gradually or abruptly reduced distally, essentially glabrous (sparsely piloso-ciliate along proximal margins), gland-dotted.

usually 0, rarely (spreading to ascending) 1–2 mm.

0 or (ascending) 2(–7) mm.

campanulate-cylindric, 7–9(–10) × 3.5–5 mm.

turbinate, 6–8 × 5–7 mm.

(4–)5–8;

corolla tubes glabrous inside.

(7–)8–11(–13);

corolla tubes pilose inside.

(reflexed or curving-spreading) in 4–5 series, oblong-lanceolate, unequal, essentially glabrous or ± pilose, margins with hyaline borders, sometimes ciliate, apices usually acute to acute-acuminate (sometimes distally dilated, nearly petaloid).

in 3–4(–5) series, mostly oblong, unequal, essentially glabrous, margins with hyaline borders (0.2–0.4 mm wide), sometimes sparsely ciliolate, apices rounded.

in dense, spiciform arrays.

in loose, racemiform arrays (internodes 2–14 mm).

3.8–4.5(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose, sometimes becoming elongate rhizomes.

mostly globose.

= 20.