sepal


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

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.
..... Click the link for more information.
 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
..... Click the link for more information.
). 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 ?
Gray's protologue description includes some comments about the peculiarity of the dissimilarity of the light-yellow petaloid sepals, indicating that this species may deserve to be framed in a special section of the genus Streptanthus Nutt.
Following the emergence of the sepals, the floral apex is flat to slightly convex and no other organs have yet emerged.
However, they may be perfect, yet lack sepals or petals, or both.
Dispositivos de entrada, la cual recibe las variables fisicas a medir, enviando una sepal un acondicionador de sepal o de procesamiento y un dispositivo de salida.
Additional defense of developing seeds, especially later in the fruiting stage, accrued from the evolution long, sharp, detachable trichomes on the pistillate sepals [ILLUSTRATION FOR FIGURE 7 OMITTED], and then persistent bracts that close around the developing fruits after pollination [ILLUSTRATION FOR FIGURE 8 OMITTED].
While most cultivated upland cottons are free of gossypol glands on the sepal margin (a phenotype referred to herein as NG), cultivars expressing the HG phenotype (gossypol glands present on sepal margins) have been developed (Calhoun et al.
The sepals and pedicel are covered with glandular trichomes which secrete a clear sticky fluid that tastes somewhat like pine tar.
The "mean" female flower was as similar in shape and size to the actual mean male flower as was possible (sepal width, sepal length = 13.
Sepals in fruit about as long as glands or slightly longer, rounded, thin, abaxially proximally sericeous and distally glabrous, adaxially glabrous; calyx glands 8, 3-3.
The contributions of each component to sepal and petal shape variations are shown in (Tables I and II).
All the measurement of characteristic in the mentioned experiment include, height plant, diameter of stem, the weight of sepal in plant, numbers of capsule in bushes, yield capsule, total weight of sepal in bushes, total weight of capsule in bushes, Weight of one capsule and relation of weight of sepal to capsule separately in one plant in 10 bushes as been selected & measurement of characteristic and their ranges has been analyzed for the analysis of variance used methods of MST AT-C and ranges from method of DANKAN With 5% of significant differences as been compared.
The lateral sepals are 7 cm long, which is many times longer than the upper sepal.