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Encyclopedia > Sepal
Flower of the Primrose Willowherb (Ludwigia octovalvis) showing petals and sepals
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Flower of the Primrose Willowherb (Ludwigia octovalvis) showing petals and sepals

A sepal is one member or part of the calyx of a flower. It is the outer part of the perianth, which comprises the sterile parts of a flower, consisting of inner and outer tepals that are usually differentiated into petals and sepals. The term tepal is usually applied when the petals and sepals are not differentiated. However, in a "typical" flower the sepals are green and lie under the more conspicuous petals. When the flower is in bud, they enclose and protect the more delicate parts within. Download high resolution version (800x851, 151 KB)Image of a primrose willowherb Ludwigia octovalvis (Family Onagraceae), flower showing petals and sepals. ... Download high resolution version (800x851, 151 KB)Image of a primrose willowherb Ludwigia octovalvis (Family Onagraceae), flower showing petals and sepals. ... Genera Boisduvallia Calylophus Camissonia Chamerion Circaea Clarkia Epilobium Eucharidium Fuchsia Gaura Gayophytum Gongylocarpus Hauya Hemifuchsia Heterogaura Isnardia Jussiaea Lopezia Ludwigia Oenothera Stenosiphon Xylonagra Zauschneria The Onagraceae or Willowherb family (or Evening Primose family) is a family of flowering plants. ... Wildflowers A flower is the reproductive organ of those plants classified as angiosperms (flowering plants; Division Magnoliophyta). ... A magnolia flower showing the petal-like white tepals In a general sense, a tepal is any member or segment of the perianth of a flower, such as a petal or sepal, usually used when all are of similar shape and color (that is, undifferentiated). ... A petal is one member or part of the corolla of a flower. ...


The number of sepals in a flower is indicative of the plant's classification: dicots having typically four or five sepals and monocots having three, or some multiple of three, sepals. Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Orders Base Monocots: Acorus Alismatales Asparagales Dioscoreales Liliales Pandanales Family Petrosaviaceae Commelinids: Arecales Commelinales Poales Zingiberales Family Dasypogonaceae Monocotyledons or monocots are a group of flowering plants usually ranked as a class and once called the Monocotyledoneae. ...


There exists considerable variation in form of the sepals among the flowering plants. 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. 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. Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... Genera See: List of Poaceae genera The true grasses are monocot (class Liliopsida) plants of the family Poaceae (formerly Graminae). ... Flower of the spider tree (Crateva religiosa) with its numerous conspicuous stamens The stamen is the male organ of a flower. ...


  Results from FactBites:
 
AllRefer.com - sepal (Botany, General) - Encyclopedia (234 words)
Sepals are usually green, but in some flowers (e.g., the lily and the orchid) they are the same color as the petals and may be confused with them.
The small green leaflike structures at the base of the flower head in the aster family are not true sepals but bracts; the sepals are modified into a circle of tiny white hairs on the ovary (the pappus; see aster).
The sepals are sometimes fused into a tube around the base of the petals, as in the mint family.
Sepal - Wikipedia, the free encyclopedia (225 words)
A sepal is a tepal (a segment) of the calyx of a flower.
The calyx is the outer part of the perianth, which comprises the sterile inner and outer tepals that are usually differentiated into petals and sepals.
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.
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