Flora of North America species comparison

glabrous or sparsely pilose.

glabrous.

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 3(–5)-nerved, linear-oblanceolate to linear-lanceolate, 80–250 × 2–6 mm (largest usually distal to proximalmost), gradually reduced distally, essentially glabrous (proximal margins pilose-ciliate).

(ascending) 1–7 mm.

0 or (spreading-ascending) 2–10(–20) mm.

turbinate-campanulate, 5–7 × 4–5 mm.

cylindro-campanulate, (11–)13–18 × 6–8 mm.

4–6;

corolla tubes glabrous inside.

10–35;

corolla tubes glabrous inside (lobes adaxially hispid).

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 5–7 series, ovate-triangular (outer) to broadly oblong or spatulate-oblong, strongly unequal, essentially glabrous, margins usually with narrow hyaline borders, ciliolate, apices broadly rounded, rounded-acuminate, or truncate (inner stiffly mucronate).

in compact, racemiform arrays.

borne singly or (2–28) in loose to dense, racemiform to spiciform arrays.

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

5–7 mm;

pappi: lengths ± equaling corollas, bristles plumose.

globose.

usually globose, rarely elongate.