Erect, epiphytic herbs 30-45 cm. tall, with approximate or solitary, strongly ancipitous, monophyllous, oblong-elliptic pseudobulbs 4.5-8 cm. tall and 2-3.5 cm. wide, the bases enveloped in 3-4 complanate, imbricating, foliaceous bracts. Leaves coriaceous, ligular, broadly obtuse, 15-45 cm. long and 2.5-5 cm. wide, contracted below into conduplicate petioles, the complanate-conduplicate bases distichously arranged in the form of an open fan. Inflorescences usually solitary, 1-flowered scapes 5-8 cm. long, produced from the upper bract axils. Flowers of moderate size, fragrant. Sepals subequal, free, spreading, yellow, elliptic-lanceolate, acute, 2-2.5 cm. long and .8-1.0 wide, the laterals rather obliquely inserted on the column foot, forming a short, rounded mentum. Petals yellow, ligular, the apices obliquely acute, 18-20 mm. long and 4-5 mm. wide. Lip rather obscurely 3-lobed, reddish brown to rich purple throughout, or sometimes with the lateral lobes yellow, 2-2.3 cm. long and 1-1.2 cm. wide when spread out, contracted at the base and articulated with the foot of the column, the lateral lobes or margins rounded, erect in natural position, the mid-lobe ovate, obtuse, rather fleshy, about 1/3 the total length of the lip, reflexed at the apex; the disk with a narrow, thickened, central nerve, about equaling the lateral lobes in length. Column semi-terete, somewhat arcuate, 12-15 mm. long, produced at the base into a foot.
Home