An epiphytic herb up to 26 cm. long.. Stems arising from a creeping rhizome, approximate, erect, pseudobulbous at the base, 3–4-leaved above, 5–6 cm. long; pseudobulbs ovoid or conical-ovoid, 5–7 mm. long, 4–5 mm. diameter.. Leaves erect, linear, obtuse, shortly and unequally bilobed at the apex, 9–21 cm. long, 3–5 mm. wide.. Inflorescence very much shorter than the leaves, 5–7 cm. long, few-flowered above; peduncle 3–5 cm. long, covered with 2–3 linear acute imbricating sheaths; rhachis slightly flexuose, shortly pubescent; bracts ovate, shortly or markedly acuminate, 1.5–2 mm. long.. Flowers ± spreading, glabrous, fragrant; sepals and petals white with pinkish mauve margins, lip white with a lime-green disc.. Dorsal sepal lanceolate, shortly acuminate, 9.5–11.5 mm. long, 3.75–4.5 mm. wide; lateral sepals obliquely triangular, acuminate, 12.5–13.5 mm. long, 7–9 mm. wide; mentum incurved, rotund-conical, 6.5–7.5 mm. long, bilobed at apex.. Petals narrowly lanceolate, acuminate, 10–10.5 mm. long, 3 mm. wide.. Lip recurved slightly, shortly clawed, 3-lobed just below the middle, 12 mm. long, 9.5–11 mm. wide; side lobes erect, semiovate, rounded at apex; mid-lobe clawed, recurved, suborbicular above, 6–7 mm. long, 5.5–8.5 mm. wide, margin slightly undulate, rugulose, 2–3-keeled in middle, keels crenulate; disc with a longitudinal callus to the base of the mid-lobe.. Column 4 mm. long, semiterete.
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