Plants 15-25 cm tall. Rhizome creeping or ascending. Leaves 1-3, pale green abaxially, green with dark green blotches adaxially, ovate to ovate-oblong, 5-15 × 3-6 cm, base obtuse or rounded, apex acute; petiole-like base with dark green or purplish brown spots, 7-12 cm. Inflorescence green with dark green or purplish brown spots, to 25 cm, glabrous, with 2-5 sterile bracts; rachis 5-15 cm, 5-15-flowered; floral bracts green with purplish brown spots, ovate-lanceolate, ca. 15 × 5 mm, 5-veined, apex acute or acuminate; ovary cylindric, 8-10 mm including pedicel, glabrous. Sepals green, lanceolate, 8-15 × 2-3 mm, 3-veined, margin involute, apex acute. Petals similar to sepals, green, 7-12 × ca. 2 mm, 1-veined, margin involute, apex acute; lip adaxially orange-purple, with scattered dark crimson spots, rhombic-oblong to obovate, 15-20 × 8-12 mm, 5-veined, lateral veins widely spaced, outermost pair running midway between midvein and lateral margins, base rounded and shallowly saccate, lateral margins slightly revolute, apex acute; disk with minute hairs. Column 2.3-2.5 mm; wings rugose; anther ellipsoid; pollinia 1-1.5 mm. Fl. Apr-Aug.
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