Plant about 1 ft. high. Leaves cauline, oblong-lanceolate or elliptic-lanceolate, acute, 2–4 in. long, 7–13 lin. broad, decreasing upwards. Racemes 4–5 in. long, many-flowered. Bracts ovate to ovate-lanceolate, acute, 4–8 lin. long. Pedicels 3–4 lin. long. Dorsal sepal ovate-oblong, obtuse, minutely pubescent at the apex, 1 3/4 lin. long; lateral oblong, obtuse, 2 1/4 lin. long. Petals simple, subobliquely ovate-oblong, obtuse, 1 3/4 lin. long. Lip trilobed from a broad base, 2 1/2 lin. long; lobes oblong, obtuse; front lobe rather broader than the side lobes; spur filiform, 3/4–1 in. long. Stigmatic processes broadly oblong, compressed, obtuse or retuse. Anther channel shorter. Rostellum minute, obtuse, tooth-like.
