perianth
/ˈpɛriˌænθ/
noun
- The outer part of a flower, consisting of the calyx (sepals) and corolla (petals) together.
- Botanists study the perianth to understand how flowers have evolved over time.
- The perianth of a tulip is made up of brightly colored petals that attract pollinators.
- In some flowers, the perianth is fused into a tube-like structure.