Plants with trailing rhizomes; stems 15-20 cm, very flattened; leaves coriaceous, oblong, obtuse, 3-8 cm long, 1-2.5 cm wide; peduncle excising leaves; flowers yellow-green, in spike; bracts keeled, 12-18 mm; sepals coriaceous, obtuse, 5-7 mm; petals linear, labellum above, entire, ovate-cordiform.