Flora of North America species comparison

hirtellous.

puberulent (at least distally, sometimes glabrous proximally).

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, elliptic- to oblanceolate-spatulate, 120–300 × 25–50(–55) mm, abruptly, gradually, or little reduced distally, essentially glabrous, weakly, if at all, gland-dotted.

0.

usually (ascending) 10–50 mm.

cylindric, 8–12 × 3.5–5 mm.

campanulate to turbinate-campanulate, 11–15 × (12–)15–22(–25) mm.

3–4;

corolla tubes glabrous inside.

19–80;

corolla tubes usually pilose inside, sometimes glabrous (Arkansas, Illinois, Missouri).

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 series, (erect or outer sometimes spreading-reflexing) oblong-obovate to broadly obovate (not bullate), unequal, glabrous or minutely puberulent, margins usually with relatively narrow, hyaline borders, apices broadly rounded.

(appressed, overlapping) in dense, spiciform arrays.

in racemiform arrays.

(3–)4–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4.5–6(–6.5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose to elongate.

subglobose.

= 20.