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 3–5-nerved, linear to linear-oblanceolate, 100–400 × 1–3(–5) mm, gradually reduced distally or abruptly on distal 1/2 of stems, essentially glabrous (bases of basal usually fibrous-persistent).

0 or (ascending) 1–10(–80) mm.

0.

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

cylindro-turbinate, 6–7(–10) × ca. 3 mm.

(6–)7–12(–13, mostly 9–12 in Del.

(2–)3–4(–5);

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 series, (often purple) oblong-oblanceolate to oblong-lanceolate, unequal, essentially glabrous, margins with hyaline borders, ciliolate, apices (erect or ± appressed) acuminate to acute.

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

in dense, spiciform arrays.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4–4.5 mm;

pappi: lengths ± equaling corollas, bristles barbellate to subplumose.

globose.

usually globose to subglobose, sometimes ovoid to elongate.

N.J.);

corolla tubes pilose inside.

= 20.

= 20.