Quercus is the genus of the tree commonly known as oak. The trees are characterised by their fruit, 'acorns'. There are around 100 species, found throughout the temperate northern hemisphere, with the distribution extending into the northern tropics.

Subcategories 32

Related categories 2

California Oaks
Descriptions and pictures of the oaks native to California from Las Pilitas Nursery.
California Oaks Foundation
Non-profit educational organization committed to preserving the state's oak forest ecosystem and its rural landscapes.
Common Oaks of Florida
Descriptions and illustrations of 19 species.
International Oak Society
Nonprofit organization dedicated to encouraging the study and cultivation of the true oaks (genus Quercus). News, events and publications.
Quercus acutissima: Sawtoot Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus coccifera
Photographs of flowering leafy shoots.
Quercus fontanesii
Image of foliage and catkins.
Quercus havardii
Information on distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus hemisphaerica: Darlington Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus ilicifolia: Bear Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus imbricaria: Shingle Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus incana
Distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus incana: Bluejack Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus margarettae: Sand Post Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus nigra
Distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus nigra: Water Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus oblongifolia
Information on distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus oleoides
Description of this evergreen tree, with photographs of leaves, flowers and bark.
Quercus pagoda: Cherrybark Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form..
Quercus palustris
Distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus palustris: Pin Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus petraea
Information on the Durmast Oak and photographs of its foliage.
Quercus pungens
Information on distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus shumardii
Distribution and occurrence; value and use; characteristics; and fire ecology.
Quercus shumardii: Shumard Oak
Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.
Quercus wislizenii
Distribution and occurrence; value and use; characteristics; and fire ecology.
[Tree Mozilla]
Last update:
March 25, 2016 at 0:05:06 UTC
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