Begonia yunckeri Standl. Begonia yunckeri Standl. in Publ. Field Mus. Nat. Hist., Bot. Ser. 17(4): 378, pl. 15. 1938 sec. Burt-Utley 2014=Begonia candollei Ziesenh., Begonian 36: 38. 1969 syn. sec. Burt-Utley 2014