Erect, epiphytic herbs with clustered, oblong-ovoid to elliptic-ovoid, com-pressed, rugose, monophyllous pseudobulbs 2.5-4 cm. tall and 1.5-2.5 cm. wide, the bases enveloped in several imbricating, papery bracts. Leaves coriaceous, acute, or retuse and obscurely 2-lobed at the apex, 15-30 cm. long and 1.5-2 cm. wide, contracted below into a conduplicate petiole. Inflorescences usually 3-4 short to elongate, 1-flowered scapes from the base of the pseudobulbs, enveloped in num-erous, often spreading, conspicuous, tubular, papery, acuminate bracts. Flowers of moderate size, dark reddish or purplish brown with a maroon lip, or with yellow sepals and petals which may be marked with varying amounts of the darker color. Sepals free, subequal, spreading, lanceolate to elliptic-lanceolate, acute, 1.8-2.2 cm. long and .4-.6 cm. wide, the laterals adnate to the foot of the column, forming a short, subacute mentum. Petals lanceolate, acute, 1.5-1.8 cm. long and .4-.6 cm, wide. Lip conspicuously 3-lobed, 1.4-1.6 cm. long and .6-.8 cm. wide when spread out, contracted at the base and articulated with the foot of the column, the lateral lobes short, conspicuously erect in natural position, the mid-lobe elliptic-lanceolate to elliptic-ovate, acute to subacute, about 2/3 the total length of the lip, the apex thickened, with a fleshy keel on the under-surface; disk with a broad, obtuse, fleshy callus about equaling the lateral lobes in length. Column short, stout, somewhat arcuate, rather dilated at the apex, produced at the base into a foot.
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