Stem slender, 4–6 in. high, 2-leaved. Leaves alternate, sessile, cordate-ovate or ovate-oblong, subobtuse or apiculate, 8–13 lin. long, 4–8 lin. broad, with an apiculate sheath at the base. Racemes short or subcorymbose, 2–5-flowered. Bracts ovate, acute or apiculate, 2 1/2–4 lin. long. Pedicels 4–6 lin. long. Dorsal sepal united with the petals into a concave obtuse hood, 3 lin. long, slightly gibbous behind; lateral sepals obliquely semiobovate, apiculate, united in the basal third. Lip with slender flattened claw, 1 3/4 lin. long; basal third adnate; free part bearing a pair of suberect, linear, obtuse appendages, over 1/2 lin. long, below the middle of the free part; limb reflexed, ovate, membranous, 3/4 lin. long, exserted from the galea, with a broad, flattened, obtuse erect tooth or crest near the base. Column 1 lin. long; arms of rostellum 1/2 lin. long. Capsule oblong, 5–6 lin. long.
