Flora of North America species comparison

glabrous or densely piloso-puberulent.

glabrous or puberulent-villous.

basal and proximal cauline 3–5-nerved, linear to narrowly oblanceolate or oblanceolate, 110–220 × 4–10(–12) mm, gradually then abruptly reduced distally (bractlike proximal to heads), essentially glabrous or sparsely pilose to densely piloso-puberulent, weakly gland-dotted (bases of basal usually fibrous-persistent).

basal and proximal cauline 3–5-nerved, broadly linear to linear-oblanceolate, 70–220 × 2–12 mm (largest usually distal to proximalmost), gradually reduced distally, puberulent-villous or glabrous, weakly gland-dotted.

usually 0, rarely (spreading to ascending) 1–2 mm.

0 or (spreading to ascending) 1–8(–20+) mm.

campanulate-cylindric, 7–9(–10) × 3.5–5 mm.

cylindro-campanulate, 12–20(–25) × 7–10 mm.

(4–)5–8;

corolla tubes glabrous inside.

(10–)23–45(–60);

corolla tubes glabrous inside (lobes adaxially hispid).

(reflexed or curving-spreading) in 4–5 series, oblong-lanceolate, unequal, essentially glabrous or ± pilose, margins with hyaline borders, sometimes ciliate, apices usually acute to acute-acuminate (sometimes distally dilated, nearly petaloid).

(usually erect, sometimes spreading-reflexing on the distal 1/3) in 5–7 series, narrowly ovate-triangular and foliaceous (outer) to ovate or oblong-triangular, ± equal, glabrous or pubescent, margins without hyaline borders, stiffly to softly ciliate, apices acuminate to acute.

in dense, spiciform arrays.

borne singly or (3–26) in loose, racemiform to spiciform arrays.

3.8–4.5(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4–5.5 mm;

pappi: lengths ± equaling corollas, bristles plumose.

globose, sometimes becoming elongate rhizomes.

globose to slightly elongate.