Caespitose, epiphytic herbs with erect or pendulous, flattened, foliaceous stems 12-40 cm. long and 1.4-2.5 cm. wide. Leaves narrowly triangular in profile, subacute, coriaceous, 1.5-3.5 cm. long and 0.4-1.0 cm. wide. Inflorescences short, compact, few-flowered panicles, up to about 3 cm. long. Flowers relatively large for the genus, on long filiform pedicels subtended by conspicuous, ovate-cordate, membranaceous bracts. Sepals free, subequal, slightly concave, yellow, the dorsal sepal erect or somewhat reflexed, ovate, obtuse, with a minute, terminal apicule, 5-6 mm. long and about 4 mm. wide, the lateral sepals strongly reflexed in natural position, elliptic-lanceolate, subacute, 5-6 mm. long and about 4 mm. wide. Petals somewhat longer than the sepals, yellow, elliptic-oblong, obtuse, incurving, the lateral margins conduplicately reflexed in natural position, 5-7 mm. long and about 4 mm. wide when spread out. Lip complexly 3-lobed, yellow, with reddish brown markings at the base, about 10 mm. long and 8 mm. wide, the lateral lobes linear-ligular, acute, antrorsely incurving in natural position, the mid-lobe subquadrate, distinctly or obscurely 4-lobulate, with undulate margins, the truncate apex with a deep central sinus, the basal lobules equaling or somewhat exceeding the 2-parted mid-lobule in width when spread out, very strongly reflexed in natural position, the disk with a linear, truncate, papillose callus. Column very short, with broadly spreading, lateral wings.
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