Flora of North America species comparison

glabrous or densely piloso-puberulent.

hispidulous-puberulent.

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 (usually withering before flowering) and proximal cauline 1-nerved, broadly oblanceolate to elliptic- or lanceolate-spatulate to linear-lanceolate, 80–250 × (4–)6–25 mm, gradually or abruptly reduced distally, essentially glabrous or sparsely or densely puberulent-hispidulous, ± gland-dotted (distal especially).

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

0 or (ascending to spreading or deflexed) 1–5(–10) mm.

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

campanulate-hemispheric to turbinate-campanulate, (9–)10–16 × 10–20 mm.

(4–)5–8;

corolla tubes glabrous inside.

(14–)18–24(–30);

corolla tubes pilose 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).

usually in 4–5 series, (outer or outer and middle usually reflexed) broadly obovate to oblong-spatulate, unequal, essentially glabrous, margins with relatively broad, whitish-hyaline, irregular to erose or lacerate borders (especially on the distal 1/3), strongly bullate (with a sharp, low, rounded buttress delimiting the hyaline border), apices usually rounded to subtruncate.

in dense, spiciform arrays.

in 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.

= 20.