Tetramerous flower of Ludwigia octovalvis showing petals and sepals. Ludwigia ( primrose-willow, water-purslane, or water-primrose) is a genus of about 75 species of Aquatic plants with a cosmopolitan

A sepal (from Latin separatus "separate" + petalum "petal") is a part of the flower of angiosperms or flower plants. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group Sepals in a "typical" flower are green and lie under the more conspicuous petals. As a collective unit the sepals are called the calyx of a flower. A flower, also known as a bloom or Blossom, is the reproductive structure found in Flowering plants (plants of the division Magnoliophyta, also

The calyx is part of the perianth of the flower. The perianth is composed of the sepals (collectively called the calyx) and the corolla (which is the outer part of the flower with the inner part of the perianth composed of the petals). The petals and sepals are usually differentiated into colorful petals and green sepals. A petal (from Ancient Greek petalon "leaf" "thin plate" regarded as a highly modified leaf is one member or part of the corolla But many flowers have colorful sepals and lack petals or the sepals and petals look similar and are often called tepals. The term tepal is usually applied when the petals and sepals are not differentiated and look similar or the petals are absent and the sepals are colorful. Tepals are elements of the Perianth, or outer part of a flower which include the Petals or Sepals The term tepal is usually used when all segments When the flower is in bud, the sepals enclose and protect the more delicate floral parts within. Morphologically they are modified leaves.

The number of sepals in a flower (called merosity) is indicative of the plant's classification: eudicots having typically four or five sepals and monocots and palaeodicots having three, or some multiple of three, sepals. Tepals are elements of the Perianth, or outer part of a flower which include the Petals or Sepals The term tepal is usually used when all segments Eudicots and Eudicotyledons are terms introduced by Doyle & Hotton (1991 to refer to a group of Flowering plants that had been called "tricolpates" or "non-Magnoliid Monocotyledons or monocots are one of two major groups of Flowering plants (angiosperms that are traditionally recognised the other being Dicotyledons Paleodicots (sometimes spelled "palaeodicots" is an informal name used by botanists (Spichiger & Savolainen 1997 Leitch et al

There exists considerable variation in form of the sepals among the flowering plants. The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group Often the sepals are much reduced, appearing somewhat awn-like, or as scales, teeth, or ridges. Examples of flowers with much reduced perianths are found among the grasses. Poaceae or Gramineae is a family in the Class Liliopsida of the flowering plants. In some flowers, the sepals are fused towards the base, forming a calyx tube. This floral tube can include the petals and the attachment point of the stamens. The stamen ( Plural stamina or stamens, from Latin stamen meaning "thread of the warp " is the male

See also

Plant morphology