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The Fagales are an order of flowering plants, including some of the best-known trees. The order name is derived from genus Fagus, beeches. They belong among the rosid group of dicotyledons. The families and genera currently included are as follows: Betulaceae – birch family ( Alnus, Betula, Carpinus, Corylus, Ostrya, and Ostryopsis)
The Fagaceae are a family of flowering plants that includes beeches, chestnuts and oaks, and comprises eight genera with about 927 species. Fagaceae in temperate regions are mostly deciduous, whereas in the tropics, many species occur as evergreen trees and shrubs.
Fagaceae. Fagales, beech order of dicotyledonous woody flowering plants, comprising nearly 1,900 species in 55 genera. Members of Fagales represent some of the most important temperate deciduous or evergreen trees of both hemispheres, including oaks, beeches, walnuts, hickories, and birches.
Fagaceae, or the oak and beech family, contains about 1,000 species unevenly distributed among 7 or 8 genera. The largest genus in Fagaceae is Quercus (oaks), with about 400 species, mostly limited to the warmer parts of the Northern Hemisphere.
Species in the Fagaceae are trees or shrubs with simple, usually toothed and/or lobed leaves arranged alternately along the stem. The trees have separate pollen -bearing and ovule -bearing flowers. Both types of flowers usually grow on the same plant.
Fagales are all trees or shrubs with simple leaves, or compound leaves in Juglandaceae and Rhoipteleaceae, usually arranged alternately (rarely opposite or whorled). Each plant generally contains tiny flowers of separate sexes (monoecious); unisexual flowers are primarily pollinated by the wind.
The angiosperm family Fagaceae is a central element of several distinct community types throughout the Northern Hemisphere and a prime candidate for modern biogeographic analysis. The rich fossil record for the family provides an unparalleled source to compare with modern distributions and evaluate hypotheses of origin, migration, and vicariance.
