Shell flower is a term used to describe a particular group of flowers with external parts that are shaped like a shell. Some common synonyms for the word shellflower are conchflower, seashell flower, and shell-shaped petals. Another term used to describe these flowers is gastropod, which refers to the spiral-shaped shell structure of some shellflowers. Other synonyms include snailflower, coiled petal, and helix flower, which all emphasize the spiral shape of the flower. In general, shellflowers are admired for their unique, shapely form, and are often incorporated into decorative floral arrangements or planted in gardens as ornamental flowers.