When a flower has both the essential whorls i.e., androecium and gynoecium (male and female reproductive units), including stamens, carpels and an ovary, it is called bisexual or perfect flower. In bisexual flowers, the stamens are generally numerous.
Examples include: Lilies, Roses, Delonix Regia, Sweet Peas, African Violet etc.
Reference:
http://waynesword.palomar.edu/images/flower2a.gif
