Epiphytic herbs with narrowly linear to oblong, compressed, monophyllous pseudobulbs 2.5-4.5 cm. long and 0.4-1.0 cm. wide, enveloped below in a few imbricating, papery bracts which soon weather away. Leaves ligular, acute, coriaceous, 6.5-16 cm. long and 1.2-2.2 cm. wide, contracted below into short, slender, conduplicate petioles. Inflorescences usually solitary, arching or pendu-lous, many-flowered racemes up to about 25 cm. long, but often less. Flowers of moderate size, on slender pedicels, subtended by inconspicuous, linear-lanceolate, acuminate bracts. Sepals subequal, free, spreading, reddish brown with trans-lucent green margins, the dorsal sepal lanceolate, acuminate, concave, about 18 mm. long and 5 mm. wide, the laterals linear-lanceolate, acuminate, about 20 mm. long and 4 mm. wide, the reverse surfaces with a low central keel. Petals nar-rower than the sepals, reddish brown with translucent green margins, linear-lanceolate, acuminate, about 16 mm. long and 3.5 mm. wide. Lip conspicuously 3-lobed, about 12-15 mm. long and 7 mm. wide when spread out, contracted at the base and continuous with the base of the column, the lateral lobes semi-orbicular, white, erect, and embracing the column in natural position, the ob-liquely subacute anterior margins reflexed, the mid-lobe reddish brown, narrowly linear, acuminate, about 9 mm. long and 1 mm. wide, the disk with a low, fleshy, linear-oblong, obscurely striate callus. Column 6-7 mm. long, subterete, nar-rowed below, gradually dilated above, the margins of the clinandrium conspicu-ously lacerate, the rostellum narrowly linear-acuminate.
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