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
Trifolium variegatum cluster over 2 centimeters wide. At its base is a fused involucre of bracts. Each flower has a calyx of sepals narrowing to bristle-like tips. The flower corolla is generally purplish in color and usually has a white tip. Trifolium variegatum Trifolium variegatum is a species of clover known by the common name whitetip clover. It is native to western North America from southern Alaska and British Columbia to Baja California, where it occurs in many types of habitat. "Trifolium variegatum" is a variable plant, taking many forms. It is an annual or possibly sometimes perennial herb growing prostrate to