Flora of North America species comparison

glabrous.

hirtellous.

basal and proximal cauline 1-nerved, linear-oblanceolate to narrowly oblanceolate, 80–210 × 2–5(–10) mm, gradually or abruptly reduced distally, essentially glabrous (sparsely piloso-ciliate along proximal margins), gland-dotted.

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.

0 or (ascending) 2(–7) mm.

0.

turbinate, 6–8 × 5–7 mm.

cylindric, 8–12 × 3.5–5 mm.

(7–)8–11(–13);

corolla tubes pilose inside.

3–4;

corolla tubes glabrous inside.

in 3–4(–5) series, mostly oblong, unequal, essentially glabrous, margins with hyaline borders (0.2–0.4 mm wide), sometimes sparsely ciliolate, apices rounded.

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

in loose, racemiform arrays (internodes 2–14 mm).

(appressed, overlapping) in dense, spiciform arrays.

2.8–3.5(–3.8) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(3–)4–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

mostly globose.

globose to elongate.

= 20.

= 20.