sepal

Definitions

  • WordNet 3.6
    • n sepal one of the green parts that form the calyx of a flower
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Webster's Revised Unabridged Dictionary
    • n Sepal (Bot) A leaf or division of the calyx.☞ When the calyx consists of but one part, it is said to be monosepalous; when of two parts, it is said to be disepalous; when of a variable and indefinite number of parts, it is said to be polysepalous; when of several parts united, it is properly called gamosepalous.
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Century Dictionary and Cyclopedia
    • n sepal In botany, a calyx-leaf; one of the individual leaves or parts that make up the calyx, or outer circle of floral envelops. See calyx, cut in preceding column, and cuts under antisepalous and dimerous.
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Chambers's Twentieth Century Dictionary
    • n Sepal sep′al or sē′pal a leaf or division of the calyx of a flower
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Etymology

Webster's Revised Unabridged Dictionary
NL. sepalum, formed in imitation of NL. petalum, petal, to denote one of the divisions of the calyx: cf. F. sépale,
Chambers's Twentieth Century Dictionary
Fr. sépale—L. separ, separate.

Usage

In literature:

Calyx of 3 spreading sepals, 1 to 1-1/2 in.
"Wild Flowers Worth Knowing" by Neltje Blanchan
The flower, of which a figure is given here, is about 5 inches long and wide, the petals cream colored, the sepals greenish white.
"Scientific American Supplement, Vol. XXI., No. 531, March 6, 1886" by Various
These outer leaves are called, all together, the calyx, and each one of them is called a sepal.
"Ethel Morton's Enterprise" by Mabell S.C. Smith
The flowers have seven to ten sepals, are an inch across, and of a creamy white colour.
"Hardy Perennials and Old Fashioned Flowers" by John Wood
The leaves were three, the petals three, the sepals three.
"Mary's Meadow" by Juliana Horatia Ewing
The sepals are green and much smaller than the white petals.
"Elements of Structural and Systematic Botany" by Douglas Houghton Campbell
Leafy sepals of rose 246 130.
"Vegetable Teratology" by Maxwell T. Masters
I found many plants so protected; the glands being specially developed on the young leaves, and on the sepals of the flowers.
"Journeys Through Bookland, Vol. 7" by Charles H. Sylvester
The calyx consists of two points or sepals, attached one under and the other opposite the tube.
"The Royal Guide to Wax Flower Modelling" by Emma Peachey
The sepals are of the most delicate texture.
"The Western World" by W.H.G. Kingston
The leaves were three, the petals three, the sepals three.
"Last Words" by Juliana Horatia Ewing
You see, S is the sepals.
"Harper's Young People, June 29, 1880" by Various
Calyx spreading, of separate sepals; flowers 15 mm.
"The Plants of Michigan" by Henry Allan Gleason
The sepals and petals are pure white, the latter being broadest at the lips.
"Garden and Forest Weekly, Volume 1 No. 1, February 29, 1888" by Various
The sepals cohere and fall off as the flower opens in the form of a cap.
"The New Gresham Encyclopedia" by Various
S. Marriott of Horsemonden, Kent, and sold in 1822 to Messrs Cripps, was the earliest white-sepalled fuchsia.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3" by Various
Sepals are narrow and may be as much as an inch long.
"The Tomato" by Paul Work
There are four small green sepals at the bottom of the flower-tube, and these sepals are often stained with brown blotches.
"Flowers Shown to the Children" by C. E. Smith
For simplification of diagram, vertical position of sepal is not always shown in the figure.
"Life Movements in Plants, Volume II, 1919" by Sir Jagadis Chunder Bose
Lotus with curling sepals and different Swastikas.
"The Swastika" by Thomas Wilson
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In news:

Females lay their eggs inside the sepals of flower buds or leafy tips.
Solace from anemones, sepals of instinct pushing the air.
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In science:

This famous (Fisher’s or Anderson’s Fisher (1935); Anderson (1935)) data set gives the measurements (in centimeters) of the four variables sepal length and width, and petal length and width, for 50 flowers from each species of iris: setosa, versicolor, and virginica.
asympTest: an R package for performing parametric statistical tests and confidence intervals based on the central limit theorem
Fisher introduced a benchmark dataset that contains the sepal and petal measurements of different types of iris flowers.
Comparative performance of some popular ANN algorithms on benchmark and function approximation problems
The inputs are the measured lengths and widths of the petals and the sepals, and the output is the type of iris flower, such as Setosa, Versicolor, and Virginica.
Comparative performance of some popular ANN algorithms on benchmark and function approximation problems
The distributions of the samples with respect to the dimensions of the sepals and petals are shown in Fig.1 for an easy visualization.
Comparative performance of some popular ANN algorithms on benchmark and function approximation problems
IRIS data distribution with respect to the sepal and petal lengths.
Comparative performance of some popular ANN algorithms on benchmark and function approximation problems
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