Many of the most iconic flowers, such as roses, lilies, and tulips, are bisexual, and the female pistil is characteristically surrounded by the male stamens. Other monoecious plants, such as squashes, corn, and birches, have unisexual flowers.
Monoecious plants have male flowers and female flowers in separate structures on the same plant. "Mono" means one - and the term "monoecious" is literally "one house". The same plant houses different flowers, some being male the others being female. Squash is monoecious.
