Lip 3-lobed, but appearing 4-lobed when flattened, 7 mm long, 18 mm wide; mid-lobe recurved, transversely oblong, emarginate, apiculate; side lobes rounded; callus consisting of 2 fleshy lobes in the mouth of the spur.
Leaves 2–4, petiolate; 30–80 cm long including the petiole, 1.5–9 cm wide, the blade lanceolate or oblanceolate, plicate.
Flowers yellow or pale green, with purple marks on the side lobes of the lip and an orange callus.
Sepals 12–15 mm long, narrowly oblong-elliptic, apiculate, the laterals somewhat falcate.
Inflorescence densely many-flowered, the scape with several sheaths along its length.
Pseudobulbs above ground, 10–14 × 1–1.2 cm, erect, cylindrical, clustered.
Petals 11–13 × 4.5–6 mm, obovate-oblong, apiculate.
Bracts 10–25 mm long, linear, acuminate.
Column 5 mm long, the apex deflexed.
Pedicel and ovary 1.5–2 cm long.
Terrestrial herb 60–70 cm high.
Spur 3–4 mm long, globose.