<i>Begonia neisti</i> sp. nov. (Sect. <i>Platycentrum</i> , Begoniaceae), a new species from Arunachal Pradesh, India

Begonia neisti sp. nov., a new species of B. sect. Platycentrum , from Dibang valley of Arunachal Pradesh, India is described and illustrated. A detailed taxonomic description, along with a photographic plate, illustration, distribution map and conservation status are provided. The conservation status of the new species is preliminarily assessed as data deficient (DD) according to the IUCN red list criteria. Molecular data (ITS2) underwent phylogenetic analysis (maximum parsimony (MP) and Bayesian inference (BI)) to elucidate the relationships of the studied species within the genus.