Flora of North America species comparison

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

stipitate-glandular.

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

usually (5–)8–15(–30) mm.

0.

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

cylindro-turbinate, 8–12 × 3–5 mm.

30–70;

corolla tubes glabrous inside.

3–4(–5);

corolla tubes glabrous or glabrate 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, (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).

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

in dense, (cylindric) spiciform arrays.

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

5–6 mm;

pappi: lengths ± equaling corollas, bristles plumose.

subglobose (often knotty, densely fibrous-rooted).

subglobose to depressed-globose.

= 20.

= 20.