Herbs, epiphytic. Pseudobulbs densely arranged, nearly narrowly ovoid or ovoid, 1-1.5 cm × 4-7 mm. Leaf 1; petiole 2-4 cm; blade oblanceolate or narrowly elliptic-oblanceolate, 10-17 × 1-2.8 cm, papery, base contracted into petiole, apex acuminate. Inflorescence 11-25 cm; peduncle compressed cylindric, narrowly winged; rachis laxly 3-5-flowered; floral bracts narrowly lanceolate, 3-15(-20) mm. Flowers green; pedicel and ovary 1.5-1.8 cm. Dorsal sepal oblong-lanceolate, 10-11 × 2-2.9 mm, apex obtuse; lateral sepals obliquely ligulate-lanceolate to oblong-ligulate, 10-11 × 2.5-3 mm, apex subacute to obtuse. Petals linear-lanceolate, 10-13 × 0.7-1.2 mm, 1-veined, apex subacute; lip flabellate-oblate or broadly obovate-orbicular, 8-12 × 10-13 mm, base contracted, with 2 calli, margin irregularly denticulate, apex rounded or subtruncate, mucronate. Column gently arcuate, 4.3-5 mm, apex with 2 straight to falcate, acute wings; anther cap ca. 2 mm. Capsule obovoid, 1-1.2 cm × 6-7 mm; fruiting pedicel 9-15 mm. Fl. Sep-Oct, fr. next spring.
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