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
Discodermia calyx from it called calyculin A, which is a colorless oil used in a variety of different studies in modern medicine. "D. calyx" belongs to the Animalia family. Its phylum is "Porifera", which is characterizes it as a sponge. "D. calyx" belongs to the class demospongia and the order tetractinallida. The family that it belongs to is theonellida. Finally, the correct binomial nomenclature for this species of sponge is "Discodermia calyx", which indicates its genus and species. "D. calyx" has no colloquial name, as it is known primarily in scientific and medicinal contexts. "D. calyx" is one of a few sponges