Flora of North America species comparison

glabrous or sparsely to moderately pilose distally or throughout.

puberulent (at least distally, sometimes glabrous proximally).

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, elliptic- to oblanceolate-spatulate, 120–300 × 25–50(–55) mm, abruptly, gradually, or little reduced distally, essentially glabrous, weakly, if at all, gland-dotted.

0 or (ascending) 1–10(–80) mm.

usually (ascending) 10–50 mm.

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

campanulate to turbinate-campanulate, 11–15 × (12–)15–22(–25) mm.

(6–)7–12(–13, mostly 9–12 in Del.

19–80;

corolla tubes usually pilose inside, sometimes glabrous (Arkansas, Illinois, Missouri).

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, (erect or outer sometimes spreading-reflexing) oblong-obovate to broadly obovate (not bullate), unequal, glabrous or minutely puberulent, margins usually with relatively narrow, hyaline borders, apices broadly rounded.

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

in racemiform arrays.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4.5–6(–6.5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

subglobose.

N.J.);

corolla tubes pilose inside.

= 20.