Flora of North America species comparison

glabrous.

glabrous.

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, 50–140 × 1–7 mm, gradually or little reduced distally, essentially glabrous or sparsely piloso-hirsutulous, gland-dotted (margins sometimes ciliate).

0 or (ascending) 2(–7) mm.

0 or very rarely 1–2 mm.

turbinate, 6–8 × 5–7 mm.

campanulate-cylindric, 7–15 × (4–)5–7 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

3–8;

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 3–6 series, mostly oblong-obovate, unequal, essentially glabrous, margins without hyaline borders, sometimes ciliate, apices acute, acute-acuminate, obtuse, rounded, or rounded-truncate (often with indurate apicula or mucros, lateral veins usually not evident beyond middle or at least on distal 1/3).

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

in dense to loose, spiciform arrays.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(5.5–)6–8.5 mm;

pappi: lengths ± equaling corollas, bristles plumose.

mostly globose.

globose to depressed-globose or elongate, sometimes becoming simple or branched rhizomes.

= 20.