Begonia kekarmonyingensis (Begoniaceae), a new species from Arunachal Pradesh, Northeast India

A new species of Begonia sect. Platycentrum, B. kekarmonyingensis, from Kekar Monying, a place of historical significance in Arunachal Pradesh, Northeast India is illustrated and described. It is allied to B. cathcartii and B. menglianensis, and morphological similarities and differences between the species are discussed. It has been assessed as Vulnerable according to IUCN Red List criteria.