Type: Indonesia, Sulawesi, North Sulawesi, Minahassa, 1 iii 1895, S.H. Koorders 16246B (lectotype K [K000761117], designated by Smith & Wasshausen [1983: 444]; isolectotypes B [B100127763], BO)
–Begonia lateralis Elmer ex Merr.in Enum. Philipp. Fl. Pl. 3: 127. 1923, nom. nud.