Flora of North America species comparison

glabrous or sparsely to moderately pilose distally or throughout.

sparsely to densely puberulent, puberulent-villous, or strigoso-puberulent.

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 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.

0 or (ascending) 1–10(–80) mm.

usually (5–)8–15(–30) mm.

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

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

(6–)7–12(–13, mostly 9–12 in Del.

30–70;

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

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

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

subglobose (often knotty, densely fibrous-rooted).

N.J.);

corolla tubes pilose inside.

= 20.

= 20.