Flora of North America species comparison

glabrous or densely piloso-puberulent.

glabrous.

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 lower cauline 3–5-nerved, narrowly oblong-lanceolate to narrowly spatulate-oblanceolate, 120–350 × (2–)4–10(–20) mm (sometimes becoming more densely arranged distally), usually gradually reduced distally, essentially glabrous or sparsely villous, weakly gland-dotted (glandular hairs often not evident, bases of basal often fibrous-persistent).

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

usually 0, rarely 1–2 mm.

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

turbinate-cylindric to turbinate-campanulate, 7–11 × 4–6 mm.

(4–)5–8;

corolla tubes glabrous inside.

(4–)5–8(–14);

corolla tubes glabrous inside.

(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, ovate to oblong, unequal, essentially glabrous, margins with hyaline borders, sometimes ciliolate, apices rounded to obtuse.

in dense, spiciform arrays.

in dense to loose, spiciform arrays.

3.8–4.5(–5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(3.5–)4.5–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose, sometimes becoming elongate rhizomes.

globose to slightly elongate.