Section
Ponticae
Quercus sadleriana. Photo: (c) 2008 Keir Morse, some rights reserved (CC BY-NC-SA)
An oak is a tree or shrub in the genus Quercus (/ˈkwɜːrkəs/; Latin “oak tree”) of the beech family, Fagaceae. There are approximately 600 extant species of oaks. The common name “oak” also appears in the names of species in related genera, notably Lithocarpus (stone oaks), as well as in those of unrelated species such as Grevillea robusta (silky oaks) and the Casuarinaceae (she-oaks). The genus Quercus is native to the Northern Hemisphere, and includes deciduous…
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