Plants terrestrial, autotrophic. Pseudobulbs ca. 3 × 1.5 cm, enclosed in leaf bases. Leaves 2-4(or 5), arching, 50-200 × 0.8-1.7 cm, usually lacking serrations along margin. Inflorescence usually held clear of and longer than leaves; rachis to 9-flowered; floral bracts to 20 mm. Flowers 3.5-4 cm in diam.; sepals and petals straw-yellow to light brown, with a strong central red-brown stripe, and several weaker stripes often only distinct toward base; mid-lobe of lip with transverse fine red spots. Sepals slightly obovate, 19-31 × 6-10 mm, apex subacute; lateral sepals pendulous, somewhat oblique. Petals ca. as broad as sepals or slightly narrower; lip not fused to basal margins of column, 3-lobed; lateral lobes narrowly subelliptic; mid-lobe triangular-elliptic, margin undulate, not kinked, apex rounded or obtuse; disk with 2 incurved ridges between lateral lobes. Column 13-18 mm. Fl. Sep-Oct, fr. Nov-Apr.