Erect or spreading epiphytic herbs. Stem leafy. Leaves distichous, coriaceous, spreading-arcuate, linear, unequally bilobed at tip, imbricate and sheathing at base. Inflorescence longer than leaves, spreading, several-flowered. Flowers non-resupinate, pedicel twisted proximally. Sepals and petals subsimilar, spreading, lineartapering. Labellum erect, narrowly clawed at base with thickened margins or auricles; lamina oblong-pandurate, trilobed at apex, long-apiculate; spur cylindrical, spiral apically, 15–25 cm long, pendent. Column fleshy toward base, dilated at apex; anther obovoid, pollinia two, porate, attached by a oblanceolate stipe (tegula) to an elliptic viscidium with a notched tip; stigma kidney- shaped; rostellum tapering to a shallowly notched tip.
The species is epiphytic in light shade on trunks and large branches of forest trees in damp lowland evergreen forests, open forests, and solitary trees in grassland, also on granite rocks in grassland in areas of high rainfall, occurring from sea level to 1000 m. Pollination There is no information on the pollination biology of this species, but given its nocturnal scent it is probably sphingophilous.
Fl. Tellur. 4: 42 (1836).