Gender and Sexual Dimorphism in Flowering Plants

While the majority of flowering plant species are hermaphroditic, gender di­ morphism, or the occurrence of two sexual morphs, has, nevertheless, evolved on repeated occasions. Gender dimorphism is found in nearly half of all angio­ sperm families and in approximately 10% of flowering plant species. Where plants are dimorphic in gender, they can also be dimorphic in secondary sex characters. We re...