Flora of North America species comparison

glabrous or sparsely pilose.

piloso-puberulent to hirsute.

basal and proximal cauline (arising from separated nodes) 1-nerved, linear to linear-lanceolate, 100–300 × 1–2(–2.5) mm, gradually or abruptly reduced distally, essentially glabrous, gland-dotted (proximal margins sometimes ciliate).

basal and proximal cauline 1-nerved, linear to linear-oblanceolate, 120–300 × 3–8 mm, gradually reduced distally to ± midstem, abruptly reduced to ± uniform bracts distally, essentially glabrous, gland-dotted (margins sometimes sparsely ciliate).

(ascending) 1–7 mm.

0 or 1–5(–10) mm.

turbinate-campanulate, 5–7 × 4–5 mm.

cylindro-campanulate, 8–10 × 4–5 mm.

4–6;

corolla tubes glabrous inside.

6–10;

corolla tubes glabrous inside.

in 2–3(–4) series, lanceolate to oblong or elliptic-oblong, unequal, essentially glabrous, margins with (pinkish purple) hyaline borders, apices usually rounded-retuse and minutely involute-cuspidate to apiculate.

in 3–4(–5) series, ovate to oblong-oblanceolate or oblong-lanceolate, strongly unequal, usually essentially glabrous, sometimes sparsely strigose to pilosulous, margins with hyaline borders, ciliolate, apices acute (inner with slightly subterminal, ‘rolled’ apicula), ciliolate.

in compact, racemiform arrays.

in dense, spiciform arrays.

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

3–3.5 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

elongated into rhizomes, irregularly shaped (sometimes with thickened, fibrous roots).

= 20.