Lip 8–11 × 4–6 mm, lanceolate, acuminate, very concave, with a raised linear callus at the base; spur 18–28 mm long, slender, straight or subsigmoid.
Sepals 11–14.5 × 1–5 mm, lanceolate, acuminate, the lateral sepals somewhat falcate.
Inflorescences arising along the stem, opposite leaves, 1.5–3 cm long, 1–2-flowered.
Leaves distichous, 3–6 × 1–1.3 cm, elliptic, unequally 2-lobed at the apex.
Roots numerous, arising opposite the leaves, long, c. 2 mm in diameter.
Epiphytic herb; stems elongate and scandent, leafy, up to 40 cm long.
Flowers white or greenish-white; spur pale green.
Petals 10–12.7 × 1.3–4 mm, lanceolate, acuminate.
Pedicel and ovary 8–10 mm long.
Column 1.5–2 mm long.
Bracts 2–3 mm long.