Flora of North America species comparison

glabrous.

sparsely to densely puberulent, puberulent-villous, or 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, narrowly oblanceolate to spatulate-lanceolate, 90–150(–220) × 4–17(–24) mm, gradually reduced distally to near midstem, then abruptly reduced, linear or narrowly lanceolate, ascending to nearly erect, bractlike, sparsely to densely puberulent, ± gland-dotted.

0 or (ascending) 2(–7) mm.

usually (5–)8–15(–30) mm.

turbinate, 6–8 × 5–7 mm.

campanulate to turbinate-campanulate, 10–15 × 13–18 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

30–70;

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–)4–5 series, oblong-obovate to oblong-spatulate, strongly unequal, essentially glabrous, margins with (purple) hyaline borders, erose to lacerate or irregular, apices broadly rounded to truncate.

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

(4–21) in open, racemiform arrays (terminal heads sometimes maturing first and larger).

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

mostly globose.

subglobose (often knotty, densely fibrous-rooted).

= 20.

= 20.