Caespitose, epiphytic herbs up to about 85 cm. tall. Stems slender, simple, covered with the amplexicaul leaf-sheaths, naked below. Leaves 4.5-18 cm. long and 0.8-4 cm. broad, elliptic-lanceolate to oval or ovate, acuminate or acute. In-florescence terminal, paniculate, many-flowered; flowers relatively small. Dorsal sepal 5-6 mm. long and 1.2-2 mm. broad, oblanceolate, acute, sometimes papillose dorsally. Lateral sepals 5-6 mm. long and 1.7-2 mm. broad, oblanceolate to elliptic-oblanceolate, oblique, sometimes papillose dorsally. Petals 4-5 mm. long and 0.1-0.5 mm. broad, filiform to narrowly linear-oblanceolate, obtuse. Lip unguiculate; claw adnate to the column; lamina 2.5-3.5 mm. long and 4.5-5.5 mm. broad, 3-lobed, subreniform in outline; labteral lobes explanate, larger than the terminal lobe, dolabriform, margins crenate or undulate; mid-lobe subquad-rate, retuse and with erect to spreading lobules; disc provided with a large oval central callus made up of 3 parallel ridges, the middle one extending to the apex of the lip.
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