Four new species and one new combination in the Malagasy endemic genus Micronychia Oliv. (Anacardiaceae)

Four new species of the Malagasy endemic genus Micronychia are described based on newly available material, and a previously recognized variety is elevated to the rank of species, bringing the total number of accepted species to 10, a two-fold increase. Illustrations are provided for each of the new taxa, along with preliminary assessments of their conservation status. An identification key in English and French is also included.