Herbs, epiphytic. Pseudobulbs densely arranged, subterete, attenuate toward apex, somewhat compressed, ca. 1 cm, near apex with 3-5 spaced leaves. Leaf blade linear-lanceolate, 1.5-3 × 0.4-0.6 cm, base contracted into a short petiole, articulate, apex acuminate or acute. Scape ± arching, to 8 cm, ± narrowly winged; raceme 10-20-flowered; floral bracts subulate, conspicuously shorter than pedicel and ovary. Flowers white. Sepals elliptic, ovate-elliptic, or oblong, 2-3 mm, apex acute; lateral sepals somewhat oblique. Petals linear, nearly as long as sepals; lip subsquare, conspicuously shorter than sepals, below middle conspicuously folded and twisted, appearing like 2 lateral auricles, near base with 4 calli, distal 2 larger, apex rounded and emarginate, or sometimes apiculate. Column erect, upper part with a pair of small triangular wings and lower part with a pair of lateral wings. Fl. Sep.
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