Figure 27.1: Perfect and Imperfect Flowers (A) A lily is an example of a perfect flower, meaning one that has both male and female sex organs. (B) Imperfect flowers are either male or female. Corn is a monoecious species: both types of imperfect flowers are borne on the same plant. (C) Red campion is a dioecious species; some red campion plants bear male imperfect flowers, and others bear female imperfect flowers.