Taxonomic recircumscriptions in the Aglaia elaeagnoidea complex (Meliaceae).

is the most widespread and species-rich genus in , comprising 124 species. has presented along standing dilemma for taxonomists; it is highly morphologically and ecologically variable, and has a range extending across India, South east Asia, Australia and islands of the western Pacific Ocean. Previous work has examined molecular variation in the eastern part of the species 'range; however, molecular variation in the western half of its distribution remained uncharacterised, precluding taxonomic resolution of the complex. In this study, we used DArT-seq analysis to investigate genetic structure in from India, Sri Lanka, Bangladesh, Thailand, Java and Bali. Wefind a strong genetic disjunction between Sri Lanka and Bangladesh, suggesting that western comprises two taxa. On the basis of these results, in combination with morphology and previous molecular work on eastern , we resolve into three species, retaining for the eastern (type)species, and reinstating for a species in Bangladesh, Thailand, Java and Bali, and for a species occurring in India and Sri Lanka. We provide descriptions for each taxon and a key to the species, thereby resolving a previously difficult species group in a notoriously complex genus.