Flora of North America species comparison

glabrous.

moderately to densely strigoso-hirtellous.

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 1-nerved, narrowly oblanceolate to linear-oblanceolate, 90–180 × 2–4(–7) mm, gradually or abruptly reduced distally, essentially glabrous (proximal margins sparsely ciliate).

0.

(divergent-ascending, initially diverging at angles of 45–90°) 10–25(–30) mm.

cylindro-turbinate, 9–12 × 3.5–5 mm.

turbinate-campanulate, (5–)6–7.5 × 5–7 mm.

3–4(–5);

corolla tubes glabrate inside.

7–12;

corolla tubes pilose inside.

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).

in (2–)3–4(–5) series, broadly obovate (outer) to broadly oblong-obovate, strongly unequal, sparsely strigoso-villous (outer) or essentially glabrous, margins with (pinkish purple) hyaline borders, sometimes slightly erose, usually densely ciliate, apices rounded to subtruncate.

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

in loose, (columnar) racemiform arrays.

4.5–6 mm;

pappi: lengths ± equaling corollas, bristles plumose.

2.5–2.8 mm;

pappi: lengths equaling or surpassing corollas, bristles barbellate.

globose or subglobose.

globose to depressed-globose.