Flora of North America species comparison

glabrous.

hirsute to piloso-hirsute.

basal and proximal cauline 1-nerved, linear to linear-lanceolate, 70–150 × 1–2.5 mm, abruptly or gradually reduced on distal 1/2 of stems, essentially glabrous (margins sometimes sparsely ciliate).

basal and proximal cauline 3–5-nerved, linear-lanceolate, 60–180 × 2–7 mm (largest usually distal to proximalmost), gradually reduced distally, hirsute to piloso-hirsute.

0.

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

cylindro-turbinate, 9–12 × 3.5–5 mm.

cylindro-campanulate, 11–17 × 6–9 mm.

3–4(–5);

corolla tubes glabrate inside.

15–30;

corolla tubes glabrous inside (lobes adaxially hispid).

in 2–3 series, (often dark purple in anthesis) oblong-lanceolate to lanceolate-triangular, weakly unequal, essentially glabrous, margins without hyaline borders, sometimes sparsely ciliate, apices acute to acute-attenuate (sometimes with narrow tips).

(spreading to reflexed) in 5–7 series, ovate-triangular (outer) to oblong-triangular, unequal, usually sparsely hirsute, margins without hyaline borders, coarsely hirsute-ciliate, apices acute-acuminate.

(closely spaced, stems obscured) in dense, (cylindric) spiciform arrays.

in loose, racemiform to spiciform arrays.

4.5–6 mm;

pappi: lengths ± equaling corollas, bristles plumose.

5.5–6.5 mm;

pappi: lengths ± equaling corollas, bristles plumose.

globose or subglobose.

globose to slightly elongate.