Clerodendrum japonicum (Thunb.) Sweet Clerodendrum japonicum (Thunb.) Sweet, Hort. Brit.: 822. 1826 sec. Govaerts 2013≡Volkameria japonica Thunb. in Nova Acta Regiae Soc. Sci. Upsal., ser. 2, 3: 208. 1780 syn. sec. The Plant List 2013