A new species of genus Chiloschista (Aeridinae, Vandeae, Epidendroideae, Orchidaceae) from Sumatra Island, Indonesia

<i>Chiloschistatjiasmantoi</i>, a new species of epiphytic leafless orchid from the northernmost region of Sumatra Island, Indonesia, is described and illustrated. The flower of this new species is morphologically close to <i>C.javanica</i>, but differs in having oblong-obovate petals, narrowly oblique oblong side lobes with truncate to obtuse apex, and a different shape of lip sac.