Robust terrestrial. Pseudobulbs ovoid, to 13 cm long, clustered. Leaves 3?5, narrow-elliptic, to 1 m long, to 12 cm wide. Flowers 12-25, to 5 cm wide, white; summer. Sepals and petals ovate to almost circular, overlapping, incurved. Labellum midlobe entire, side lobes white with reddish spots.

C and S America.

Source: Jeanes, J. (2005). Orchidaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.