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 3–5-nerved, linear to linear-oblanceolate, 100–400 × 1–3(–5) mm, gradually reduced distally or abruptly on distal 1/2 of stems, essentially glabrous (bases of basal usually fibrous-persistent).

usually (5–)8–15(–30) mm.

0.

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

cylindro-turbinate, 6–7(–10) × ca. 3 mm.

30–70;

corolla tubes glabrous inside.

(2–)3–4(–5);

corolla tubes glabrous 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, (often purple) oblong-oblanceolate to oblong-lanceolate, unequal, essentially glabrous, margins with hyaline borders, ciliolate, apices (erect or ± appressed) acuminate to acute.

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

in dense, spiciform arrays.

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4–4.5 mm;

pappi: lengths ± equaling corollas, bristles barbellate to subplumose.

subglobose (often knotty, densely fibrous-rooted).

usually globose to subglobose, sometimes ovoid to elongate.

= 20.

= 20.