Plants to 20(–30) cm. Bulbs ovoid, 1.5–2.5 × 1–2 cm, offsets absent, tunics translucent to pale brown. Leaves 2–4(–5); blade prominently ribbed, linear-spatulate, 15–35(–40) cm × 3–8(–12) mm, apex abruptly contracted. Scape 20–35(–40) cm, usually slightly exceeding leaves. Racemes 12–20-flowered. Flowers: perianth tube sky blue, globose to ovoid, 2–4 × 2–3 mm, teeth white; fertile and sterile flowers ± equal (sterile may be slightly smaller and paler); pedicel spreading, 1–3(–5) mm. Capsules 4–6 × 4–6 mm. 2n = 18, 36.