sepal

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Related to Sepals: stamens, Carpels

sepal,

a modified leaf, part of the outermost of the four groups of flowerflower,
name for the specialized part of a plant containing the reproductive organs, applied to angiosperms only. A flower may be thought of as a modified, short, compact branch bearing lateral appendages.
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 parts. The sepals of a flower are collectively called the calyx and act as a protective covering of the inner flower parts in the bud. 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. In some groups of plants (e.g., the marsh marigold and the anemone) they are absent. 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 asteraster
[Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aster, sometimes called wild asters, and for a related plant more correctly called China aster (Callistephus chinensis
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). The sepals are sometimes fused into a tube around the base of the petals, as in the mint family.

sepal

[sēp·əl]
(botany)
One of the leaves composing the calyx.

sepal

any of the separate parts of the calyx of a flower
References in periodicals archive ?
Some morphological traits for instance Spikelets length, Peduncle length, plant height, subsidiary stem length, Sepals length, Stem diameter and Flower length have moderate degree of genetic variation and classified into 5 and 6 groups in which significantly difference was observed (Table 4).
8-6 cm diam; sepals heteromorphic, two smaller ovate, 5-6 x 3-4 mm, strigulose, margin glabrous, three larger obovate, elliptic-oblanceolate, 6.
2-1 cm Sepal Adaxially golden villous Corolla orientation Slightly oblique respect to the calyx Corolla color Red Corolla limb symmetry Subactinomorphic Corolla length 3-3.
The most peculiar characters of this taxon are located in the flowers, which are strongly zygomorphic with an urceolate and markedly bilateral calyx; sepals are light yellow (lower altitude populations) or purple (higher altitude populations); there are existing populations that show yellow-purplish sepals as an intermediate character; the adaxial sepals are larger than the abaxial; the abaxial are suborbicular to broadly ovate-cordate, forming a distinctive banner like hood, keeled, 4-6 x 6-8 mm; petals are subincluded or barely exserted, purplish or brownish, especially on the veins.
There are two long, lateral, upper stamens that are, although appearing largely in the upper half of the flower, actually inserted opposite the lower sepals (Figs.
Petals, stamens and pistil from sporangiare meristem, and sepals, bracts and receptacle from receptacle meristem are formed, which is in accordance with findings of Majd and Jafari [11] and Jafari and Sharee [12].
The CIE L and a values of the floret parts at FB, including the petals, dorsal sepals, laterals sepals, and lips, from the two Vanda hybrids (Fig.
The outer 'petals' on a fuchsia flower are called sepals and the inner ones are the corolla.
These sepals are green in the spring and enfold the developing persimmon flower.
Flowers 85-110 mm long, fragrance not detected, pedicels 23-35 x 4-10 mm, greenish toward the apex, sparsely to subdensely and coarsely white-lepidote, strongly complanate mainly the outer ones and dilated toward the base; sepals asymmetric, narrowly subelliptic-lanceolate, 38-44 x 13-15 mm, erect and imbricate to each other at anthesis, apex acuminate, connate at the base for 3-4 mm, ecarinate, green, glabrous, thin in texture except for the membranous margins; petals sublinear-lanceolate, acuminate, 56-62 x 5-6.
Flowers have four concentric whorls of parts: sepals on the outside, then petals, then stamens and carpels at the center.
Staminate flowers light yellow when fresh; sepals 3, ovate, 1 mm long, connate for 1/2 their length, lobes reaching 1/2 to the total height of the corolla tube; petals 3, ovate-acuminate, 4-7 mm long, including a 1 mm long acumen, connate up to 1-1,5 mm (1/6-1/4 of their length); stamens 12-15, 1-3 opposite each sepal and 2-3 opposite each petal, filaments 1-1,5 mm long, anther 2-2,2 mm long, round at apex; pollen elliptical, monosulcate, tectate, 25,65 [+ or -] 1,01 um diam, exine reticulate, exine thickness 0,52 [+ or -] 0,10 um, with reticule aperture 0,75 [+ or -] 0,43 um diam, reticule width 0,48 [+ or -] 0,06 um; pistillode trimerous, minute.