Orchidantha crassinervia sp. nov. (Lowiaceae) from Guangxi,China

Here we describe and illustrate a new species, Orchidantha crassinervia sp. nov. (Lowiaceae), from Guangxi Province, China. The species is closely related to O. yunnanensis and O. virosa, but can be distinguished from these species in possessing a very thick midrib of the labellum, fewer flowers per inflorescence and by a shorter plant height. The species is known only from the three populations within 3 km.