Rhizome creeping, 1-2 mm in diam., rooting from base of pseudobulbs. Pseudobulbs 5-10 mm apart on rhizome, ovoid, 5-12 mm, 5-10 mm in diam., with a terminal leaf. Leaf subsessile; blade elliptic, oblong-lanceolate, or ovate, 1-6 × 0.7-1.8 cm, thickly leathery, apex obtuse or sometimes retuse. Scape from base of pseudobulb, erect, ca. 10 cm; umbel 3-9-flowered; peduncle slender, sparsely with 2 or 3 tubular sheaths; floral bracts lanceolate, small, 3-4 mm. Pedicel and ovary 7-10 mm, slender. Flowers yellowish green or yellow slightly tinged with brown. Dorsal sepal ovate, concave, ca. 5 × 2.5 mm, margin fimbriate-ciliate, apex long caudate; lateral sepals narrowly lanceolate, 35-50 × ca. 2.5 mm, twisted near base, their upper and lower edges connate to each other forming a long-cuspidate tube, with their apices separate, apex long cuspidate. Petals obliquely ovate, 2.5-3 × ca. 1.5 mm, base ca. 2/5 width adnate to column foot, margins fimbriate-ciliate especially in apical half, apex acute; lip recurved, ligulate, ca. 2.5 mm, fleshy, nearly glabrous, subacute. Column ca. 2 mm; stelidia subulate, ca. 1 mm; foot upcurved, ca. 1.5 mm, with free part ca. 0.5 mm; anther cap papillate margined. Fl. Apr-Sep.
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