Begonia longifolia is a species of flowering plant in the family Begoniaceae.[1] It is native to the eastern Himalayas, southern China, Hainan, Taiwan, mainland Southeast Asia, and some of the islands of Indonesia.[2] An erect perennial herb reaching, it is typically found in shady, moist forests at elevations from .[1] It is the most widespread species of Begonia in Asia, and probably in the world.[1] [3]