Flora of North America species comparison

hirtellous.

glabrous or sparsely to moderately pilose distally or throughout.

basal and proximal cauline 1-nerved, spatulate-oblanceolate to narrowly oblanceolate, 40–150(–180) × 4–8(–11) mm, abruptly reduced (linear, 1–2 mm wide), then gradually reduced distally, essentially glabrous or hirtellous (sometimes mostly along abaxial midveins), gland-dotted.

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.

cylindric, 8–12 × 3.5–5 mm.

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

3–4;

corolla tubes glabrous inside.

(6–)7–12(–13, mostly 9–12 in Del.

in 3(–4) series, oblong to oblong-lanceolate, unequal, usually glabrous, rarely minutely puberulent, margins with hyaline borders, apices acute to acuminate.

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.

(appressed, overlapping) in dense, spiciform arrays.

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

(3–)4–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose to elongate.

globose.

N.J.);

corolla tubes pilose inside.

= 20.

= 20.