Erect, epiphytic herbs with approximate, linear, strongly ancipitous pseudobulbs 5.5-10 cm. tall and 1.2-1.8 cm. wide, the truncate apices with a single leaf, the bases of the pseudobulbs enveloped in several papery, imbricating bracts. Leaves elliptic-lanceolate, acute, subcoriaceous, 15-20 cm. long and 3.5-5 cm. wide. Inflorescences short, arching or pendulous, 1-to 3-flowered scapes produced from the bases of the pseudobulbs. Flowers of moderate size. Sepals spreading, pure white, 2.5-3 cm. long and 0.4-0.5 cm. wide, the dorsal sepal free, lanceolate, acute, the lateral sepals connate to about the middle, acuminate. Petals subequal to the dorsal sepal, pure white, lanceolate, acuminate, 2.5-3 cm. long and 0.6-0.8 cm. wide. Lip tubular, white with pale orange lines in the throat, obscurely 3-lobed, obovate when spread out, 3.5-4 cm. long and 2.5-3 cm. wide, the narrowed base adnate to the base of the column, the lateral margins convolute and enveloping the column, the mid-lobe retuse at the apex, the lateral lobules reflexed and undulate, the disk with an elongate, central keel exceeding the length of the column. Column elongate, semiterete, the margins of the apex projecting and forming a distinctly 3-parted, minutely denticulate hood over the anther.
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