Flora of North America species comparison

glabrous or sparsely to moderately pilose distally or throughout.

glabrous.

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, (50–)90–150 × (2–)4–9(–12) mm wide, usually abruptly, sometimes gradually, reduced distally, glabrous or sparsely pilose (abaxially), gland-dotted (proximal margins sparsely pilose-ciliate).

0 or (ascending) 1–10(–80) mm.

0 or (ascending) mostly 2–12 mm.

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

campanulate-cylindric, (6–)7–9 × 3.5–4.5(–5) mm.

(6–)7–12(–13, mostly 9–12 in Del.

7–10(–12);

corolla tubes pilose 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.

usually in 3–5(–6) series, in 5–6(–7) series in largest heads, ovate-triangular to oblong, unequal, glabrous, margins with narrow, hyaline borders (lacking at apices), sometimes sparsely ciliolate, apices acute to obtuse-angled (with thickened, not markedly involute, apicula).

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

in loose, racemiform to spiciform arrays (not secund, internodes 6–20 mm).

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(2–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

mostly globose.

N.J.);

corolla tubes pilose inside.

= 20.

= 20.