Lip 5–6 × 2–3 mm, very concave, acute, with a central raised callus at the base; spur 6–8 mm long, slightly swollen in apical half.
Leaves distichous, 6–12 cm × 2–4 mm, linear, falcate, acutely and unequally 2-lobed at the apex.
Slender, pendent epiphytic herb; stem c. 30 cm long, flattened, almost winged.
Flowers pale yellow or yellow-green, less than 10 mm in diameter.
Roots 1–1.5 mm in diameter, arising all along the stem.
Petals similar but slightly shorter and narrower.
Sepals 6–9 × 1.5–2 mm, linear-lanceolate, acute.
Column less than 1 mm long.