An erect terrestrial or epiphyte with slightly flattened stems, 24–30 cm. long, 5–6 mm. in diameter.. Roots 2.5 mm. in diameter.. Leaves distichous, elliptic, unequally roundly bilobed, 7–10 cm. long, 2.1–3 cm. wide, twisted at the base and articulated to 2–2.2 cm. long leaf-sheaths.. Inflorescences 1-flowered, up to 10 cm. long; peduncle 2.8–3.2 cm. long; bracts ovate, obtuse, 5–6 mm. long.. Flowers green shaded with white; pedicel and ovary 3.5 cm. long.. Sepals narrowly lanceolate, acuminate, 4.3–5 cm. long, 0.9–1.1 cm. wide.. Petals obliquely lanceolate, acuminate, 4–4.3 cm. long, 0.6 cm. wide.. Lip concave, broadly obovate or obcordate, obscurely 3-lobed at the apex, 3.2–3.4 cm. long, 4.2–4.4 cm. wide, with an apicule 2.5 mm. long; side lobes rounded.. Spur funnel-shaped at the base, geniculate in the middle, cylindrical in the apical part, 6.2–6.5 cm. long, 2 cm. wide across the mouth.. Column 5 mm. long.
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