Stems tall, climbing, leafy. Leaves oblong or ovate-oblong, very shortly and obliquely bilobed, obtuse, a little broader below, 3–4 1/2 in. long, 1 1/4–1 3/4 in. broad. Racemes axillary subsessile, 1–1 1/2 in. long, dense, many-flowered, with distichous bracts and flowers. Bracts ovate, acute, concave, closely imbricate, 3–6 lin. long. Pedicels 5–6 lin. long. Sepals ovate, acute, concave; dorsal carinate, 3 lin. long. Petals similar and equal to the sepals. Lip oblong, apiculate, cucullate, as long as the sepals; spur infundibuliform at the base, recurved and subclavate at the apex, 4 lin. long. Column very short; pollinia with single stipes and narrow gland; rostellum rostrate.
