A New Variety of the Mycoheterotrophic Orchid Didymoplexis obreniformis (Orchidaceae) from Borneo, Malaysia

Abstract

A new variety, Didymoplexis obreniformis J.J. Sm. var. maliauensis Suetsugu, M. Suleiman & Tsukaya (Orchidaceae), found during a botanical expedition in the Maliau Basin Conservation Area, is described and illustrated. Variety maliauensis resembles var. obreniformis, which is known only from Java, Indonesia, in having a remarkably retuse lip but differs in having a distinct central ridge on the sepals and petals, smaller and narrower lip, narrower lateral petals, and narrower dorsal and lateral sepals.