Unisexual flowers are either staminate (bearing stamens only) or pistillate (bearing pistils only) and are said to be imperfect. Bisexual flowers are perfect because they have both stamens and pistil. When staminate and pistillate flowers occur on the same individual, the plant is called monoecious (examples include corn and the walnut tree). When staminate and pistillate flowers are borne on separate individual flowers, the plant is said to be dioecious (examples include asparagus and willow).
Was this article helpful?