Robust epiphyte or epilith. Stem to 2 m long. Leaves strap-shaped, to 30 cm long, to 4 cm wide, leathery, curved, glaucous above, streaked dark green or reddish below. Inflorescences to 50 cm long. Flowers to 4 cm wide, white with purplish suffusions, spur greenish; summer. Sepals and petals ovate-oblong. Labellum 3-lobed, mid lobe ovate to obovate, tip notched. Spur short, compressed, forward-pointing.
India, Burma,Thailand & Laos.
Source: (2005). Orchidaceae. In: . Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.