Tuber ovate-oblong, 8 lin. long, 5 lin. broad. Leaves 2, basal, horizontal, suborbicular or broadly ovate-orbicular, 1 1/2–1 3/4 in. long, 1 1/2–2 in. broad. Scapes about 1 ft. high, with numerous triangular-lanceolate, acuminate, bract-like sheaths. Bracts narrowly ovate-lanceolate, acuminate, 4–7 lin. long. Pedicels 5–7 lin. long. Dorsal sepal ovate, acute, 2 1/2 lin. long; lateral obliquely ovate-oblong, with curved, acuminate apex, 3 lin. long. Petals bipartite; posterior lobe falcate-lanceolate, subobtuse, 2 lin. long; anterior lobe falcate-linear, 1 3/4 lin. long. Lip tripartite, with short entire base; lobes linear; side lobes 2 1/2 lin. long, somewhat divaricate; front lobe 3 1/4 lin. long; spur clavate, 5–6 lin. long. Stigmatic processes subclavate-linear, 1 1/2 lin. long. Anther channels free from the side lobes of the rostellum, and each about 1 1/2 lin. long; middle lobe of the rostellum very minute, tooth-like.
