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Leaf solitary, appearing after flowering, large, prostrate, (5)9–17 cm long and (6)11–19 cm wide, reniform to almost orbicular, deeply cordate at base, apiculate, glabrous, 11–20-veined, heavily pleated (especially when young); lateral veins strongly curved towards the leaf margin; petiole 0–1.5(5) cm long, sulcate with 1–2 sheathing cataphylls when young.
Lip yellowish with reddish veins, 24–38 × 17.5–26 mm, ovate, obscurely 3-lobed, bearing 2 parallel fleshy pubescent ridges from base of lip to base of mid-lobe; side lobes semicircular to oblong, rounded, erect, enclosing the column; mid-lobe ovate, subacute, recurved.
Scape erect, thick, yellowish-brown to purple, laxly to rather densely 3–8-flowered, with 2–4 sheathing cataphylls, the uppermost rarely bract-like and up to c. 4 cm long.
Sepals and petals subequal, ligulate-lanceolate, acute, light green to yellowish-green; lateral sepals slightly oblique, 24–27 × 4–5.5 mm.
Column curved, 13.5–19 mm (in lowest flower 15–19 mm), clavate, glabrous; anther front rim with two protruding teeth.
Flowers large, yellowish tinged with brown; bracts 14–35 × 1–4.2 mm, filamentous to lanceolate.
Erect terrestrial herb 25–80 cm tall, glabrous except for lip and subterraneaen parts.
Tuber 3–3.5 cm in diameter, subspherical or ovoid.
