Erect or pendulous, epiphytic herbs, 45-75 cm. tall, with elongate, cylindric canes, the lower portion usually with inconspicuous, distant, complanate-elliptic pseudobulbs, the internodes naked or enveloped in the persistent, imbricating leaf bases, the upper stem without pseudobulbs and with 2-ranked foliage. Leaves coriaceous, ligular-lanceolate, acute, 12-27 cm. long and 2-3.5 cm. wide; the conduplicate petioles imbricating and 2-ranked on the stem. Inflorescences erect 1-flowered scapes 6.5-8 cm. tall, enveloped in several tubular, papery, acuminate bracts. Flowers relatively large and conspicuous. Sepals free, spreading, subequal, the apices recurved, white with a central rose-red blotch, to wine-red with yellowish margins, lanceolate, acuminate to long-acuminate, 3-5 cm. long and 1.0-1.2 cm. wide, the dorsal sepal with a keel, the laterals inserted on the very short column foot barely forming an obscure mentum. Petals subequal to the sepals and similarly colored, lanceolate, acuminate to long-acuminate, 2.5-4 cm. long and 7-8 mm. wide. Lip very short, 3-lobed, rich orange, 8-10 mm. long and 12-14 mm. wide when spread out, abruptly contracted at the base into a short claw which is articulated with the foot of the column, the subfalcate, acute, lateral lobes erect, the obtuse, concave mid-lobe about 2/5 the total length of the lip, the lateral margins lightly incurving; the disk with a truncate, sulcate or obscurely 3-lobed fleshy callus which about equals the lateral lobes in length. Column short, semi-terete, 6-8 mm. long, the base with a very short foot.
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