Etymology: derived from Ilha Formosa ‘(Beautiful Island)’ a Portugese name for Taiwan; B. sinensis auct. non A. de Candolle: Henry in Trans. Asiat. Soc. Form. 24:46. 1896.; B. laciniata auct. non Roxburgh: Forbes & Hemsley, J. Linn. Soc. Bot. 23:322. 1888.—Tang–Shui Liu & Ming–Jou Lai, Fl. Taiwan 3:795. 1977 [= B. formosana (Hayata) Masamune var. formosana, 1961.] — Cuizhi Gu, Ching-I Peng & Nicholas J. Turland, Flora of China 13, Begoniaceae 14:174. 2007.; B. laciniata Roxburgh var. formosana Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30:124. 1911.—Tang–Shui Liu & Ming–Jou Lai, Fl. Taiwan 3:795. 1977.[= B. formosana (Hayata) Masamune var. formosana, 1961.] — Cuizhi Gu, Ching-I Peng & Nicholas J. Turland, Flora of China 13, Begoniaceae 14:174. 2007.; B. laciniata auct. non Roxburgh: Hayata, J. Coll. Sci. Imp. Univ. Tokyo 22:166. 1906. —Hayata, J. Coll. Sci. Imp. Univ. Tokyo, 30:124. 1911 [= B. laciniata Roxburgh var. formosana Hayata. 1911.] —Tang–Shui Liu & Ming–Jou Lai, Fl. Taiwan 3:795. 1977[= B. formosana (Hayata) Masamune var. formosana, 1961.] — Cuizhi Gu, Ching-I Peng & Nicholas J. Turland, Flora of China 13, Begoniaceae 14:174. 2007.; B. tarokoensis M. J. Lai. 1990.; B. formosana (Hayata) Masamune f. albomaculata Tang–Shui Liu & Ming–Jou Lai. 1977.