Disperis Swart

Ariyarathne, W. A. M. P., Yakandawala, Deepthi, Samuel, Rosabelle & Wijesundara, Siril, 2017, Evaluating the occurrence and conservation statuses of Sri Lankan Orchids (Orchidaceae): Observations on newly recorded species and undocumented regions, Phytotaxa 308 (1), pp. 37-53 : 48

Disperis Swart

Only one species found in Sri Lanka D. neilgherensis (Syn: Disperis zeylanica Trimen , Disperis walkeriae Rchb. f. ) and enlisted as a VU species ( MOE, 2012). Jayaweera (1981) mentioned this species as D. zeylanica by stating that the Indian species, D. neilgherensis is a longer form of D. zeylanica . However in 2005, Kurzweil recognized all the Asian taxa in genus Disperis as one wide spread species, Disperis neilgherrensis Wight. Recently observations were made on large populations of this species from Deanston, Kalupahana and Riverstan in the Knuckles range and lack of this species from other already mentioned sites can be due to extinction/drying out of the plant in vegetative phase.