Sepal Sepal A sepal ( or ) is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom. The term "sepalum" was coined by Noël Martin Joseph de Necker in 1790, and derived from the Greek σκεπη ("skepi"), a covering. Collectively the sepals are called the calyx (plural calyces), the outermost whorl of parts that form a flower. The word "calyx" was adopted from the Latin "calyx", not to be confused with "calix", a cup or goblet. "Calyx" derived from
Calyx-Krater by the artist called the Painter of the Berlin Hydria depicting an Amazonomachy sitting calmly on her horse. Beside her is a crouched Amazon who appears to be striking something behind the horse. To the right of that Amazon is another Greek soldier leaning away with an ax raised above his head. On the far right is an Amazon with an ax raised above her head apparently preparing to strike a Greek soldier around the side of the vase. Calyx-Krater by the artist called the Painter of the Berlin Hydria depicting an Amazonomachy The calyx-krater by the artist called the "Painter of the Berlin Hydria depicting an Amazonomachy" is an ancient Greek painted