Taxonomic studies in the genus Disperis (Orchidaceae) in Southeast Asia

The taxonomy of the Asian species of the genus Disperis (Orchidaceae) was examined. Following study of material from throughout the distribution range all previously recognised Asian taxa were considered synonymous, and therefore only one widespread species D. neilgherrensis Wight is recognised. While most plant parts are merely highly variable in their size, the structure of the lip appendage is not uniform in the Indian specimens.