Fig. 1From: A rare duodichogamous flowering system in monoecious Toona sinensis (Meliaceae)Inflorescence structure of Toona sinensis, including a the number of compound dichasium and b the flowering phases (1 = primary, 2 = secondary, 3 = tertiary, and 4 = quaternary). Male flowers occur through the whole phases, but female flowers only occur in the quaternary phaseBack to article page