Petal

A petal is one member or part of the corolla of a flower; it is the inner part of the perianth. The perianth comprises the sterile parts of a flower, consisting of inner and outer tepals that are usually differentiated into petals and sepals. The term tepal is usually applied when the petals and sepals are not differentiated. In a "typical" flower the petals are showy and colored and surround the reproductive parts; but there is considerable variation in form among the flowering plants.