Sonerila vatphouensis (Melastomataceae), nouvelle espèce du Laos

A new species of Sonerila, related to S. tuberosa based on its tubercules and foliar dimorphism, is described and illustrated. The new species has foliar glands, previously noted in the genus only from S. neodriessenioides. However, the foliar glands of Sonerila vatphouensis are oblong, as are those of the mono-typic genus Stussenia, while those of Sonerila neodriessenioides are peltate.