Flora of North America species comparison

hirtellous.

glabrous or densely piloso-puberulent.

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 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).

0.

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

cylindric, 8–12 × 3.5–5 mm.

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

3–4;

corolla tubes glabrous inside.

(4–)5–8;

corolla tubes glabrous inside.

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

(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).

(appressed, overlapping) in dense, spiciform arrays.

in dense, spiciform arrays.

(3–)4–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

3.8–4.5(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose to elongate.

globose, sometimes becoming elongate rhizomes.

= 20.