Plants 300–55 tall. Free part of leaf to 250 x 5–8mm. Spike 50–9 long, 5–30-flowered. Ovary sessile, green. Flowers densely crowded, scented, 14–17 x 11–13mm, greenish-brown, petals white with dark central stripe, labellum white, callus dark green. Dorsal sepal 8–11 x 3–4.5mm, decurved or incurved. Lateral sepals free, 8–10 x 2mm, base humped, tips recurved. Petals 7–10 x 2mm, widely divergent. Labellum sessile, oblong, sharply recurved near middle, upper part often touching labellum base, 9–11 x 4mm, distal margins strongly folded and wavy/crinkled. Callus a thin flat plate, ending at labellum bend, apex blunt.
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