A staminate flower is a male flower, bearing only stamens. A pistillate flower is female, bearing only pistils.
A monoecious (pronounced moan-EE-shus) plant has separate male flowers and female flowers occurring on the same plant. Plants that are dioecious (die-EE-shus) have either staminate or pistillate flowers on separate plants. Some wild American grapes are dioecious, with male plants unable to produce fruit.
Croton (Codiaeum variegatum) flowers. Pistillate or female flowers on left, staminate or male flowers on right.