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one of the four basic parts of a 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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. The stamen (microsporophyll), is often called the flower's male reproductive organ. It is typically located between the central pistil and the surrounding petals. A stamen consists of a slender stalk (the filament) tipped by a usually bilobed sac (the anther) in which microspores develop as pollenpollen,
minute grains, usually yellow in color but occasionally white, brown, red, or purple, borne in the anther sac at the tip of the slender filament of the stamen of a flowering plant or in the male cone of a conifer.
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 grains. The number of stamens is a factor in classifying plant families, e.g., there are 5 (or multiples of 5) in the rose family and 10 in the pulse family. In most flowers the stamens are constructed so as to promote cross-pollination and to avoid self-pollination; e.g., they may be longer than the pistil or may be so placed in relation to the pistil (as in the mountain laurel and the lady's-slipper) as to prevent the pollinating insect from transferring the pollen of a flower to its own pistil. There may be differing maturation times for the stigma of the pistil and for the anther. In some plants there are some flowers (staminate) that bear stamens and no pistil and others (pistillate) that have a pistil and no stamens; these flowers may be borne on the same or on separate plants of the same species. In some highly developed flowers, especially double ones, and in some horticultural varieties (e.g., the geranium) the stamen may be modified into a sterile petallike organ.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the reproductive organ of the flower of angiosperms in which the pollen grains are formed. The stamen is homologous to the microsporophyll. A typical stamen consists of an anther filament, which contains a vascular bundle, and an anther, the symmetrical halves of which are joined by a strand attached to the anther filament. Microspores are formed from the cells of the archesporium after meiosis. In each of the four nidi of the anther (microsporangia), the microspores sprout into male gametophytes—pollen grains. The aggregate of stamens of a flower is called the androecium. The stamens are arranged on the torus spirally (as in many Ranunculaceae) or in circles. Stamens arranged spirally may range from one to numerous; those arranged in a circle usually number from three to ten. Stamens may concresce with the anthers (Compositae), the filaments (legumes), or entirely (some Cucurbitaceae). They sometimes concresce with other parts of the flower, for example, the corolla (many sympetallous plants) or the pistil (some Orchidaceae).


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


The male reproductive structure of a flower, consisting of an anther and a filament.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


the male reproductive organ of a flower, consisting of a stalk (filament) bearing an anther in which pollen is produced
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
The hierarchical clustering analysis (HCA) and principal components analysis (PCA) were applied to demonstrate the variability of the content of 11 flavonoids in 14 batches of Nelumbinis stamen samples by using PASW Statistics (Version 19.0), Matlab (Version 2012a) and the Unscrambler X 10.0 software from Camo AS (Trondheim, Norway).
The optimized chromatographic conditions of flavonoids from Nelumbinis stamen were as described in 'HPLC methods', which enabled acceptable resolution of compounds 1 and 2 as well as excellent resolution of compounds 3-11 (Fig.
The retention time, maximum ultraviolet absorption and mass spectral data of compounds exactly matched with the corresponding reference compounds, which were shown in Table 3.11 chromatographic peaks in Nelumbinis stamen were unequivocally identified, namely rutin (1), hyperoside (2), isoquercitrin (3), kaempferol 3-O-galactoside (4), kaempferol 3O-glucuronide (5), astragalin (6), isohamnetin 3-O-rutinoside (7), isorhamnetin 3-O-glucoside (8), quercetin (9), kaempferol (10) and isorhamnetin (11).
Emergence of the androecium commences with the lower two stamens of the outer androecial whorl (i.e., the long, lateral, upper stamens).
The report by Parks (1935) of the delayed emergence of the petals until after the first stamens in T.
Although the stamens typically emerge and mature in a nearly simultaneous manner throughout the family, certain taxa exhibit discernibly centripetal patterns of development while others exhibit discernibly centrifugal patterns (Table 1).
When the flowers started to open, they were unbagged and hand-pollinated using pollen from long and medium stamens, contacting the stigmas five times.
(1) Autogamy, 20 flowers were hand-pollinated, half of them with pollen of long stamens and the other half with pollen of medium ones, of the same flower.
The development of staminodes in zygomorphic flowers is independent of the number of stamen whorls, reflecting a different gene expression.
(2.) Harungana madagascariensis (Glusiaceae) and several other Clusiaceae possess antepetalous stamen fascicles alternating with five indented nectary scales (Fig.