Plants 40–180 cm. Corms globose. Stems glabrous. Leaves: basal and proximal cauline (mostly arising from congested nodes) 1-nerved, lance-linear to linear, 100–380 × (1–)2–6(–9) mm, abruptly reduced distally, glabrous (minutely white-dotted by stomates), weakly, if at all, gland-dotted (glandular hairs usually not evident). Heads in compact, racemiform arrays. Peduncles (ascending) 1–7 mm. Involucres turbinate-campanulate, 5–7 × 4–5 mm. Phyllaries in 2–3(–4) series, lanceolate to oblong or elliptic-oblong, unequal, essentially glabrous, margins with hyaline borders, apices usually rounded-retuse and minutely involute-cuspidate to apiculate. Florets 3–5; corolla tubes glabrous inside. Cypselae 2.5–4 mm; pappi: lengths ± equaling corollas, bristles barbellate.
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