Flora of North America species comparison

glabrous or sparsely pilose.

glabrous or puberulent-villous.

basal and proximal cauline (arising from separated nodes) 1-nerved, linear to linear-lanceolate, 100–300 × 1–2(–2.5) mm, gradually or abruptly reduced distally, essentially glabrous, gland-dotted (proximal margins sometimes ciliate).

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.

(ascending) 1–7 mm.

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

turbinate-campanulate, 5–7 × 4–5 mm.

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

4–6;

corolla tubes glabrous inside.

(10–)23–45(–60);

corolla tubes glabrous inside (lobes adaxially hispid).

in 2–3(–4) series, lanceolate to oblong or elliptic-oblong, unequal, essentially glabrous, margins with (pinkish purple) hyaline borders, apices usually rounded-retuse and minutely involute-cuspidate to apiculate.

(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 compact, racemiform arrays.

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

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4–5.5 mm;

pappi: lengths ± equaling corollas, bristles plumose.

globose.

globose to slightly elongate.