Tuber globose, 1 in. diam. Leaves 2 to a tuber, contemporary with the flowers, distinctly petiolate, oblong or oblong-lanceolate, acute, moderately firm, glabrous, 5–6 in. long, 1–2 in. broad at the middle. Peduncle slender, 6–9 in. long. Raceme moderately dense, 2–4 in. long; pedicels ascending, the lower 1/2–1 in. long; bracts ovate-lanceolate, white, with a brown keel. Perianth 1/4 in. long; segments linear-oblong, white, with a distinct brown keel. Stamens half as long as the perianth; filaments filiform; anthers subglobose, minute. Capsule 1/3 in. long; valves obovate, reflexing.