The key difference between pedicel and peduncle is that pedicel is the stalk that holds an individual flower, while peduncle is the main stalk that holds a complete inflorescence. A flower is the main reproductive structure of flowering plants or angiosperms. There are several types of simple flowers, composite flowers and inflorescences. A simple flower is a single flower that has only one pedicel or flower stalk. The inflorescence is a cluster of flowers attached to one main stalk called peduncle. Thus, the peduncle is the stalk of the inflorescence. Pedicel facilitates the connection between an individual flower and peduncle of an inflorescence. In fact, both pedicel and peduncle are stems that support flowers.