Caespitose, epiphytic herbs with flattened, pendulous, foliaceous stems, 15-50 cm. long and 1-2 cm. wide. Leaves, as normally seen in profile, rather obliquely triangular, acute or sharply apiculate at the apex, coriaceous, 12-30 mm. long and 4-10 mm. wide. Inflorescences usually 1 to 3 relatively large, spreading, divaricate, few-to many-flowered panicles up to about 8 cm. long, produced from the subterminal leaf axils. Flowers small, white with a yellow lip, less than 10 mm. in diameter when spread out, on slender filiform pedicels subtended by small, subcordate, papery bracts. Sepals free, subequal, spreading, ovate, obtuse, concave, 3-4 mm. long and about 2 mm. wide. Petals elliptic-oblong, obtuse, 4-5 mm. long and about 2 mm. wide. Lip more or less rectangular in outline, about 6 mim. long and 4 mm. wide, the basal half subquadrate, slightly concave, with narrow, erect, lateral margins, the sessile base adnate to the base of the column, the midlobe 4-parted, usually somewhat reflexed, the lateral lobules acute, spreading or divaricately extrorse, the projecting central lobule oblong to subquadrate, the apex deeply emarginate, the disk with a bifid, puberulent callus, the concave base under the column with a minute, semiglobose, densely papillose, shortly stipitate process. Column very short, 1-1.5 mm. long, with broadly spreading triangular or auriculate wings on each side of the stigma, the base without a foot.
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