Rhizome creeping, 3-5 mm in diam. Pseudobulbs 3-11 cm apart on rhizome, ovoid-conic or narrowly ovoid, 2-5 cm, 6-15 mm in diam., with a terminal leaf. Petiole 1-2.5 cm; leaf blade oblong, 7-21 × 1.6-4.3 cm, leathery, apex obtuse and retuse. Scape from base of pseudobulb, erect, yellowish green with purplish red stripes, ca. 17 cm; umbel several flowered; peduncle slender, 1-2 mm in diam., with several tubular sheaths; floral bracts pale yellow, spotted with purple, lanceolate, ca. 5 mm, apex acute. Pedicel and ovary ca. 1 cm, slender. Sepals and petals whitish, densely spotted with purplish red; lip purple. Dorsal sepal ovate-oblong, concave, ca. 5 × 3 mm, with 5 veins spotted with purplish red, adaxially slightly scabrous or finely papillate, apical margins toothed, apex with a long awn ca. 3 mm; lateral sepals oblong, 15-20 mm, base adnate to column foot, twisted near base, connate along upper margin, apex obtuse. Petals oblong or falcate-oblong, ca. 3 × 1 mm, with 3 thickened veins spotted with purplish red, both surfaces densely minute-papillate, margins purplish red and with comblike or irregular teeth, apex with an awn ca. 0.8 mm; lip recurved, ovate-triangular, fleshy, centrally with 1 white longitudinal band, base grooved, attached to end of column foot by a mobile joint, apex obtuse. Column yellowish green, 1-2 mm, with wings at middle; foot white, spotted with purplish red, upcurved, ca. 3 mm, with free part ca. 1.5 mm; stelidia deltoid, ca. 1 mm, apex acute; anther cap yellow, apical margins ciliate. Fl. Feb-Nov. 2n = 38.
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