Pseudobulbs 3 in. or more apart on a stout rhizome, oblong, compressed-triquetrous, angles acute, 2–3 in. long, 8–14 lin. broad, 2-leaved. Leaves oblong, obtuse, 6–8 in. long, 1–1 3/4 in. broad. Scapes suberect, 3/4–1 ft. high, with broad loose sheaths below; spikes compressed, 5–6 lin. long. Bracts distichous, ovate, subacute, carinate, conduplicate, much imbricate, 6–9 lin. long. Flowers dark purple. Dorsal sepal ovate-triangular, acute, somewhat incurved, concave, glabrous, fleshy, 2 lin. long, somewhat scaberulous; lateral ones somewhat falcate and flatter, otherwise similar. Petals falcate-linear, acute, 1 1/2 lin. long, glabrous. Lip orbicular with very fleshy centre, and recurved, obtuse apex; margins submembranous, suberect, and closely serrulate; disc slightly channelled. Column 3/4 lin. long, very stout; teeth minute.