Slender, caespitose,-epiphytic herbs up to about 50 cm. tall. Stems strict, covered with amplexicaul leaf-sheaths, becoming naked below. Leaves 3-14 cm. long and 0.8-2.5 cm. broad, elliptic to lanceolate, obtuse or acute. Inflorescence short, usually exceeded by the leaves, rachis strongly fractiflex; flowers rather large, white. Dorsal sepal 22-36 mm. long and 2.5-4 mm. broad, linear-lanceolate, acute or acuminate. Lateral sepals 22-36 mm. long and 3-4 mm. broad, linear-lanceolate, acute or acuminate, slightly oblique. Petals 20-35 mm. long and 1-2 mm. broad, filiform. Lip with claw adnate to the column; lamina 20-30 mm. long and 22-28 mm. broad, orbicular-cordate to subquadrate or transversely orbicular-oblong, usually apiculate, entire or rarely lobed (one flower seen with distinct sinuses); disc with 2 mammillate calluses at the base near the apex of the column.
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