Flora of North America species comparison

glabrous.

stipitate-glandular.

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 linear-lanceolate, 60–110 × 1.5–4(–4.5) mm, gradually or abruptly reduced on distal 1/2 of stems, stipitate-glandular.

0 or (ascending) 2(–7) mm.

0.

turbinate, 6–8 × 5–7 mm.

cylindro-turbinate, 8–12 × 3–5 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

3–4(–5);

corolla tubes glabrous or glabrate 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 series, (green, rarely purplish) oblong-lanceolate to lanceolate-triangular, unequal, densely glandular (mixture of sessile-sunken and slightly elevated glands), margins without hyaline borders, apices broadly to narrowly acute or acuminate (sometimes with indurate mucros).

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

in dense, (cylindric) spiciform arrays.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

5–6 mm;

pappi: lengths ± equaling corollas, bristles plumose.

mostly globose.

subglobose to depressed-globose.

= 20.

= 20.