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'Pendula', weeping oak, is a small to medium-sized tree with pendulous branches, reaching up to 15 m (49 ft). 'Purpurea' is another small form, growing to 10 m (33 ft), with purple leaves. 'Pectinata' (syn. 'Filicifolia'), cut-leaved oak, is a cultivar where the leaf is pinnately divided into fine, forward-pointing segments. [18]
Oak leaves and acorns contain ... without critical features for certain identification. ... of threatened oak species (as of 2020) are China with 36 species, Mexico ...
The white oak is the only known food plant of the Bucculatrix luteella and Bucculatrix ochrisuffusa caterpillars. The young shoots of many eastern oak species are readily eaten by deer. [21] Dried oak leaves are also occasionally eaten by white-tailed deer in the fall or winter. [22] Rabbits often browse twigs and can girdle stems. [21]
Quercus douglasii, known as blue oak, is a species of oak endemic to California, common in the Coast Ranges and the foothills of the Sierra Nevada. [4] It is California's most drought-tolerant deciduous oak, [5] and is a dominant species in the blue oak woodland ecosystem. It is occasionally known as mountain oak and iron oak. [6] [7]
Quercus stellata, the post oak or iron oak, is a North American species of oak in the white oak section. It is a slow-growing oak that lives in dry areas on the edges of fields, tops of ridges, and also grows in poor soils, and is resistant to rot, fire, and drought. Interbreeding occurs among white oaks, thus many hybrid species combinations ...
Quercus sinuata var. sinuata (Latin quercus, "oak" + sinuata, species epithet from nominative feminine singular of Latin sinuatus [12], participle of sinuo, "to bend or bow out in curves" [13] + var. (variety or varietas) sinuata, to distinguish this taxon from the generally more shallowly lobed variety of this species, var. breviloba) is an ...
Quercus chrysolepis, commonly termed canyon live oak, canyon oak, golden cup oak or maul oak, is a North American species of evergreen oak.Its leaves are a glossy dark green on the upper surface with prominent spines; a further identification arises from the leaves of canyon live oak being geometrically flat.
The leaves of the black oak are alternately arranged on the twig and are 10–20 cm (4–8 in) long with 5–7 bristle-tipped lobes separated by deep U-shaped notches. The upper surface of the leaf is a shiny deep green, and the lower is yellowish-brown. There are also stellate hairs on the underside of the leaf that grow in clumps. [5]