Caespitose, epiphytic herbs up to about 6.5 dm. tall (usually much less). Stems slender, covered with leaf-sheaths. Leaves 4-17 cm. long and 1.8-8 cm. broad, elliptic, elliptic-ovate, ovate or oval, acuminate, pergameneous. Inflorescence a compact many-flowered spike up to about 9 cm. long; bracts up to about 1.5 cm. long, lanceolate-ovate or ovate, acuminate. Dorsal sepal 5.5-7 mm. long and about 2.5 mm. broad, lanceolate to oval, acute. Lateral sepals 5-7 mm. long and 2-3 mm. broad, lanceolate to oblong-lanceolate, acute, strongly keeled dorsally. Petals 3.5-7 mm. long and 1-1.5 mm. broad, linear-spatulate to spatulate, obtuse or acutish, more or less crenulate above. Lip 7-9 mm. long and 6.5-9 mm. broad, broadly ovate to orbicular, lacerate-dentate, the gibbous-saccate base en-closing 2 ovoid calluses and the sac with a bidentate lamellate callus in front.
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