Flora of North America species comparison

glabrous.

glabrous or sparsely to moderately pilose distally or throughout.

basal and proximal cauline 1-nerved, linear to linear-lanceolate, 70–150 × 1–2.5 mm, abruptly or gradually reduced on distal 1/2 of stems, essentially glabrous (margins sometimes sparsely ciliate).

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).

0.

0 or (ascending) 1–10(–80) mm.

cylindro-turbinate, 9–12 × 3.5–5 mm.

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

3–4(–5);

corolla tubes glabrate inside.

(6–)7–12(–13, mostly 9–12 in Del.

in 2–3 series, (often dark purple in anthesis) oblong-lanceolate to lanceolate-triangular, weakly unequal, essentially glabrous, margins without hyaline borders, sometimes sparsely ciliate, apices acute to acute-attenuate (sometimes with narrow tips).

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.

(closely spaced, stems obscured) in dense, (cylindric) spiciform arrays.

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

4.5–6 mm;

pappi: lengths ± equaling corollas, bristles plumose.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose or subglobose.

globose.

N.J.);

corolla tubes pilose inside.

= 20.