Epiphytic herbs. Pseudobulbs stout, ovoid or subcylindric, often longitudinally wrinkled, 6.5-8.5 cm. long and 2.5-4 cm. wide, the base usually enveloped in 3-5 brown, papery, closely imbricating bracts, the apex .truncate, unarmed, with 3-4 oblanceolate, acuminate, plicate,-prominently veined leaves 30-50 cm. long and 2-7 cm. wide. Inflorescences 4-5 cm. long, pendent, subcapitate racemes pro-duced from the base of the pseudobulbs, basal portion tightly enveloped in the papery brown, imbricating bracts. Flowers few to about 15. Sepals white, very fleshy, the dorsal sepal free, concave, ovate, acute, 18-20 mm. long and 9-12 mm. wide, arching over the column; laterals connate at the base, forming a conspicuous mentum, the apices spreading, obliquely lanceolate, acute, 20-22 mm. long and 10-12 mm. wide. Petals white, lanceolate, acute, 15-16 mm. long and 5-6 mm. wide. Lip 3-lobed, 1.6-1.8 cm. long and 1.2-1.4 cm. wide, white, the inner lip with an orange spot, lateral lobes erect, with spreading, ciliate, apical margins, mid-lobe rectangular or ovate, truncate or obtuse, strongly reflexed, with ciliate margins. Column short, 9-11 mm. long, subclavate, winged, obtuse, white with a small purple blotch at the base. Anther pure white.
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