Stems 6-18 cm, 0.6-0.8 cm in diam. Leaf blade 7.5-15 × 0.6-1.8 cm, thickly leathery, apex praemorse. Inflorescences 2 or 3, 3-4.5 cm, 1-or 2-flowered; peduncle 2-3.5 cm; rachis weakly zigzag, 0.5-5 cm; floral bracts broadly ovate, 4-6 × 2-4 mm, apex obtuse-acute. Flowers thickly textured, widely opening, 3.5-5 cm in diam.; pedicel and ribbed ovary yellowish green, 1.5-3 cm; sepals and petals yellowish green, not tessellated. Dorsal sepal oblong-spatulate, 20-30 × 5-9 mm, base cuneate, apex obtuse-acute; lateral sepals lanceolate, 20-30 × 5-10 mm, base cuneate, apex obtuse. Petals falcate-oblong, 18-28 × 2-5 mm, base contracted, apex acute; lip golden yellow to white, striped with violet-purple to red-brown, ca. as long as or longer than sepals, fleshy, spurred; lateral lobes erect, abaxially yellowish green, adaxially with dull purple stripes, ovate-triangular, 2-4 × 2-5 mm, apex obtuse; mid-lobe abaxially yellowish green with dull purple margins, adaxially white with dull purple longitudinal stripes, ovate to subpandurate, 11-20 × 4-5 mm, apex cleft sometimes with short point in sinus; disk rugulose with 2 slender elongated processes on apical margin; spur broadly conic, 6-9 mm. Column white, 4-8 mm; anther cap yellow, 3-3.5 mm wide. Fl. May. 2n = 28, 38, 76.
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