Erect, epiphytic herbs 40-75 cm. tall, with elongate, often branching, cylindric, woody canes usually arising from a basal cluster of a few stout, ovoid, fleshy pseudobulbs 3.5-4 cm. tall and 2-3 cm. wide; the long internodes or basal portions of the stems closely enveloped in the persistent, imbricating leaf bases, or becoming naked after these have weathered away; the apex of the cane with 2-ranked foliage. Leaves coriaceous, linear-lanceolate, acute, 12-38 cm. long and 1.5-3 cm. wide, forming a compact, distichous fascicle at the apex of the stems, portions of which are often still in evidence at the earlier nodes along the more elongate canes, the conduplicate leaf bases sometimes enveloping a small, poorly developed pseudobulb. Inflorescences usually about 15-30 slender, 1-flowered scapes, 1.5-3 cm. tall, in dense subsessile fascicles from the lower leaf axils. Sepals rather fleshy, subequal, free, not spreading, broadly ovate, acute, concave, reddish orange, 7-8 mm. long and 3-3.5 mm. wide, the laterals adnate to the somewhat produced base of the column, forming a short, rounded mentum. Petals lanceolate, acute, 5-6 mm. long and about 2.5 mm. wide, suffused reddish orange shading to yellow at the base. Lip entire, bright yellow or orange, 4-4.5 mm. long and 1.5-2 mm. wide, geniculate and more or less sigmoid in profile, the orbicular basal half deeply concave or subsaccate, adnate to the base of the column, the strongly reflexed apical half elliptic-oblong, obtuse, rather fleshy, with thin, erect, often somewhat undulant margins, the apex becoming rather shallowly emarginate, with a short, acute, fleshy, carinate projection on the under-surface. Column semi-terete, somewhat arcuate, bright yellow, 2.5-3 mm. long, the base without a foot.
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