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Juglandaceae |
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Juglandaceae [‚jū‚glan′dās·ē‚ē]
(botany) A family of dicotyledonous plants in the order Juglandales having unisexual flowers, a solitary basal ovule in a unilocular inferior ovary, and pinnately compound, exstipulate leaves. Juglandaceae a family of dicotyledonous trees or, rarely, shrubs. The leaves are generally alternate and exstipulate. The flowers are diclinous. The staminate flowers are often in drooping catkins; the pistillate flowers are solitary, in catkins (sometimes gathered into compound panicled inflorescences), or in groups of two or three. Juglandaceae are for the most part monoecious, wind-pollinated plants. The pistil usually consists of two carpels, and the ovary is inferior. The fruit is generally a drupe, or more accurately, an inferior drupe. The stone together with its enclosed seed is erroneously called a nut. There are eight genera of Juglandaceae, embracing approximately 70 species. They are distributed predominantly in temperate and subtropical regions of both hemispheres. Two genera grow wild in the USSR: Juglans (walnut) and Pterocarya. In addition, species of the genera Platycarya, Cyclocarya, and Carya are cultivated. The fruits of plants of the family Juglandaceae are used as food; the wood is used in the manufacture of furniture and other products. Species of the genera Juglans (English walnut, Manchurian walnut) and Carya (pecan) have the greatest economic value. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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