Flora of North America species comparison

glabrous.

glabrous or sparsely pilose.

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 (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).

0 or (ascending) 2(–7) mm.

(ascending) 1–7 mm.

turbinate, 6–8 × 5–7 mm.

turbinate-campanulate, 5–7 × 4–5 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

4–6;

corolla tubes glabrous 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 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.

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

in compact, racemiform arrays.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

mostly globose.

globose.

= 20.