Petal Petal Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals, that collectively form the "calyx" and lie just beneath the corolla. The calyx and the corolla together make up the perianth. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Examples of plants in which the term "tepal" is appropriate include genera such as "Aloe"
Calyx (anatomy) Calyx (anatomy) Calyx is a term used in animal anatomy for some cuplike areas or structures. Latin, from "calyx" (from Ancient Greek "κάλυξ, "case of a bud, husk"). The spicules containing the basal portion of the upper tentacular part of the polyp of some soft corals (also called "calice"). A body part of the Entoprocta from which tentacles arise and the mouth and anus are located. The body disk that is covered with a leathery tegumen containing calcareous plates (in crinoids and ophiuroids the main part of the body where the viscera are located). Either a minor calyx in the