Quercus coccifera - Photographs of flowering leafy shoots. Quercus fontanesii - Image of foliage and catkins. California Oaks Foundation - Non-profit educational organization committed to preserving the state's oak forest ecosystem and its rural landscapes. California Oaks - Descriptions and pictures of the oaks native to California from Las Pilitas Nursery. Quercus petraea - Information on the Durmast Oak and photographs of its foliage. Quercus oleoides - Description of this evergreen tree, with photographs of leaves, flowers and bark. Quercus havardii - Information on distribution and occurrence; value and use; characteristics; and fire ecology. Quercus incana - Distribution and occurrence; value and use; characteristics; and fire ecology. Quercus nigra - Distribution and occurrence; value and use; characteristics; and fire ecology. Quercus oblongifolia - Information on distribution and occurrence; value and use; characteristics; and fire ecology. Quercus palustris - Distribution and occurrence; value and use; characteristics; and fire ecology. 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 wislizenii - Distribution and occurrence; value and use; characteristics; and fire ecology. 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 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: 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: Water Oak - Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form. Quercus pagoda: Cherrybark Oak - Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.. Quercus palustris: Pin Oak - Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form. Quercus shumardii: Shumard Oak - Tree identification fact sheet with photos of the leaf, flower, acorn, twig, bark and form.