Flora of North America species comparison

glabrous.

strigoso-puberulent.

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.

basal and proximal cauline 1-nerved, linear to narrowly oblanceolate, 80–120 × 2–5 mm, gradually reduced distally or abruptly reduced on distal 1/2 of stems, essentially glabrous (margins proximally piloso-ciliate).

0 or (ascending) 2(–7) mm.

20–70 mm (bracteate).

turbinate, 6–8 × 5–7 mm.

cylindro-campanulate, 14–17 × 8–11 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

20–25;

corolla tubes glabrous inside.

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 5–7 series, broadly oblong-obovate (outer) to broadly oblong, strongly unequal, sparsely short-pilose, margins without hyaline borders, ciliolate, apices rounded, sometimes mucronate.

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

(2–20+) in open, cymiform arrays.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

6–7 mm;

pappi: lengths ± equaling corollas, bristles plumose.

mostly globose.

globose to elongate-globose.

= 20.