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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.



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 male reproductive structure of a flower, consisting of an anther and a filament.


the male reproductive organ of a flower, consisting of a stalk (filament) bearing an anther in which pollen is produced
References in periodicals archive ?
Furthermore, similarity analysis (SA), hierarchical clustering analysis (HCA) and principal components analysis (PCA) were successfully applied to demonstrate the variability of the 11 flavonoids in the 14 batches of Nelumbinis stamen collected from different localities.
A multi-faceted, full-service strategic marketing and brand management agency, Pistol & Stamen has national and international reach spanning not only New York and Los Angeles, but Miami, San Francisco, Chicago, London, Paris, Tokyo, and beyond.
Stamen has a long and distinguished career in the software industry, which most recently included his role as CEO of Syncra Systems, a leading company in the supply chain collaboration space.
For Watson and Dallwitz (1992-), a staminode is a sterile stamen, or a modified structure identifiable as such, borne in the androecial region of the flower.
Stamen joins Ken Gardner, CEO of Sagent Technology; Duncan McCallum, partner at One Liberty Ventures; John Mandile, general partner at Sigma Partners; and Michael Frank, partner at Advanced Technology Ventures, on the board of DataSage.
We are extremely pleased that Jeff Stamen will be sharing his knowledge and experience with us as a member of our board," said Charlotte Bogardus, president of Gazelle.
I am very excited to be joining Syncra Software as it drives the next business revolution toward true collaborative business practices," said Stamen.
We are also pleased that Jeffrey Stamen will be able to remain on the IRI Board of Directors.
foliosissimum is sought after for its lilac flowers and orange stamens, but is hard to obtain, while P.
Inside the trumpet, the petals are white with long golden stamens emerging from the centre, while the backs of the petals are smoky-red.