An epiphytic herb, 21–25 cm. high.. Pseudobulbs clustered, from a short creeping rhizome, conical, 2–3.8 cm. long, 5–8 mm. broad, clothed in 3 membranous basal sheaths.. Leaf lanceolate to ovate-lanceolate, acute or subacute, cuneate below, 19–24.5 cm. long, 1.4–1.7 cm. broad, coriaceous, articulated 2.5–3 cm. above the apex of the pseudobulb.. Inflorescence shorter than the leaf, simply racemose, 9.8–14 cm. long, up to 5 flowers borne in succession; peduncle stout, 7.8–12 cm. long; basal sheath membranaceous, 2 cm. long; bracts spreading, triangular-lanceolate, acuminate, 1.4–2 cm. long.. Flowers white, red-and yellow-spotted on lip.. Dorsal sepal lanceolate, acuminate, 12–15.8 mm. long, 4.6–4.8 mm. broad; lateral sepals obliquely triangular, subfalcate, apiculate, 10.5–16 mm. long, 7–9.5 mm. broad; mentum ovoid-conical, to 8.5 mm. high.. Petals obovate-lanceolate, acute, 10–13.5 mm. long, 3.5–4 mm. broad.. Lip strongly recurved, ± clawed, distinctly 3-lobed, 10–11.5 mm. long, 9.5–12.5 mm. broad; side lobes erect, triangular or ovate-triangular, shorter than mid-lobe; mid-lobe rounded-subquadrate, apiculate, glandular-pubescent below, fleshily thickened in centre, 3.5–5 mm. long, 6–7 mm. broad; callus basal, obscurely fleshy.. Column semiterete, 2–2.5 mm. long; foot 5–8 mm. long, pubescent; pollinia ovoid.
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