Most angiosperms are hermaphrodite (70%; Yampolsky and Yampolsky 1922). This co-occurrence of both male and female reproductive organs on the same individual allows self-pollination and, in the ...
Degen, Bernd and Roubik, David Ward. 2004. "Effects of Animal Pollination on Pollen Dispersal, Selfing, and Effective Population Size of Tropical Trees: A Simulation Study." Biotropica, (2) 165-179.