<i>Begonia chunxiuensis</i> , a new species of <i>Begonia</i> sect. <i>Platycentrum</i> (Begoniaceae) from Guangxi, China

Begonia chunxiuensis , a new species from Guangxi of China, is described and illustrated. It is morphologically similar to B. sinovietnamica and B. aurora , but differs from them by its narrowly triangular stipules, leaf blade that is adaxially green, dark green to viridian, pinkish‐white to white villous, but abaxially light green with red veins, red to pinkish‐white villous, and convex anther apex. It also differs from B. sinovietnamica by smaller staminate flowers. The new species is currently known from only two subpopulations and is assessed as ‘Data Deficient' (DD) according to the IUCN red list categories and criteria.