Flora of North America species comparison

glabrous or sparsely to moderately pilose distally or throughout.

glabrous or sparsely pilose.

basal and proximal cauline 1-nerved, narrowly oblanceolate, 60–170(–200) × 2–7(–11) mm, abruptly to gradually reduced distally (becoming linear, spreading-ascending), essentially glabrous or sparsely pilose (abaxially), gland-dotted (proximal margins piloso-ciliate).

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) 1–10(–80) mm.

(ascending) 1–7 mm.

turbinate to campanulate-cylindric, (7–)8–10 × 5–6 mm.

turbinate-campanulate, 5–7 × 4–5 mm.

(6–)7–12(–13, mostly 9–12 in Del.

4–6;

corolla tubes glabrous inside.

in (3–)4–5(–6) series, oblong, unequal, essentially glabrous, margins with hyaline borders (0.2–0.4 mm wide), erose to lacerate, ciliolate, apices usually rounded, rarely acute.

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 to dense, racemiform to spiciform arrays (internodes 1–7 mm).

in compact, racemiform arrays.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

globose.

N.J.);

corolla tubes pilose inside.

= 20.