Flora of North America species comparison

glabrous.

glabrous or sparsely to moderately pilose distally or throughout.

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).

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, 6–7(–10) × ca. 3 mm.

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

(2–)3–4(–5);

corolla tubes glabrous inside.

(6–)7–12(–13, mostly 9–12 in Del.

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 (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 dense, spiciform arrays.

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

4–4.5 mm;

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

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

usually globose to subglobose, sometimes ovoid to elongate.

globose.

N.J.);

corolla tubes pilose inside.

= 20.

= 20.