Terrestrial. Inflorescence twining, up to 30 cm long; Ovary ovoid, style relatively long, stigma lower lip orbicular, deflexed, upper lip obsolete. Capsule broadly ovoid, dorsi-ventrally compressed, uniformly membranous, 4-5 mm long, dehiscing by dorsal and ventral longitudinal slits. Seeds numerous, ovoid, c. 0.4 mm long, testa conspicuously coarsely reticulate, reticulations elongate.
Asia-Tropical: Malaya (Peninsular Malaysia present); Thailand (Thailand present), G. Jerai present, Kedah Peak present, N. Australia present, S. Burma present, Tenasserim present
S. Burma (Tenasserim), Thailand, N. Australia, and Malesia: Malay Peninsula (Kedah Peak, G. Jerai).