Flora of North America species comparison

sparsely to densely puberulent, puberulent-villous, or strigoso-puberulent.

glabrous.

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.

basal and proximal cauline 1-nerved, lance-linear to linear, 50–150 × 2–5 mm, gradually or abruptly reduced distally, essentially glabrous (proximal margins sparsely ciliate).

usually (5–)8–15(–30) mm.

0 or (ascending) 1–6(–10) mm.

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

cylindro-turbinate, (7–)8–9 × 3.5–4 mm.

30–70;

corolla tubes glabrous inside.

4–7(–9);

corolla tubes pilose inside.

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 3–4 series, ovate-oblong, oblong, or oblong-lanceolate (inner 7.5–10 × 1–1.8 mm), strongly unequal, essentially glabrous, margins with hyaline borders (lacking at apices), ciliolate, apices (inner and middle, sometimes outer) rounded to blunt, involute-cuspidate to short-acuminate.

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

in dense, racemiform to spiciform arrays (sometimes strongly to weakly secund, especially if branches reclining, internodes 1–5 mm).

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

3–4(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

subglobose (often knotty, densely fibrous-rooted).

globose.

= 20.