Flora of North America species comparison

glabrous or densely piloso-puberulent.

puberulent (at least distally, sometimes glabrous proximally).

basal and proximal cauline 3–5-nerved, linear to narrowly oblanceolate or oblanceolate, 110–220 × 4–10(–12) mm, gradually then abruptly reduced distally (bractlike proximal to heads), essentially glabrous or sparsely pilose to densely piloso-puberulent, weakly gland-dotted (bases of basal usually fibrous-persistent).

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.

usually 0, rarely (spreading to ascending) 1–2 mm.

usually (ascending) 10–50 mm.

campanulate-cylindric, 7–9(–10) × 3.5–5 mm.

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

(4–)5–8;

corolla tubes glabrous inside.

19–80;

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

(reflexed or curving-spreading) in 4–5 series, oblong-lanceolate, unequal, essentially glabrous or ± pilose, margins with hyaline borders, sometimes ciliate, apices usually acute to acute-acuminate (sometimes distally dilated, nearly petaloid).

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.

in dense, spiciform arrays.

in racemiform arrays.

3.8–4.5(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4.5–6(–6.5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose, sometimes becoming elongate rhizomes.

subglobose.