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This shows the acorn of Bear Oak, Quercus ilicifolia, (Keeler, 1915).

Bear Oak Acorn

This shows the acorn of Bear Oak, Quercus ilicifolia, (Keeler, 1915).

This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).

Black Jack Oak Acorn

This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).

This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).

Bur Oak Acorn

This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).

This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).

Chestnut Oak Acorn

This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).

This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).

Chinquapin Oak Acorn

This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).

This shows the acorn of Pin Oak, Quercus palustris, (Keeler, 1915).

Pin Oak Acorn

This shows the acorn of Pin Oak, Quercus palustris, (Keeler, 1915).

This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).

Post Oak Acorn

This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).

This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).

Red Oak Acorn

This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).

This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

Scarlet Oak Acorn

This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).

Shingle Oak Acorn

This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).

This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).

Spanish Oak Acorn

This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).

This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).

Swamp Oak Acorn

This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).

This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).

Willow Oak Acorn

This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).

This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).

Yellow Oak Acorn

This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).

Also known as Quercus arizonica. The branch of an Arizona White Oak, native to the southwest United States.

Branch of Arizona White Oak

Also known as Quercus arizonica. The branch of an Arizona White Oak, native to the southwest United…

Also known as Quercus ilicifolia. The branch of a Bear Oak tree, native to the northeastern United States.

Branch of Bear Oak

Also known as Quercus ilicifolia. The branch of a Bear Oak tree, native to the northeastern United States.

Also known as Quercus marilandica. The branch of a Blackjack Oak, native to the southern and central United States.

Branch of Blackjack Oak

Also known as Quercus marilandica. The branch of a Blackjack Oak, native to the southern and central…

Also known as Quercus douglasii. The branch of a Blue Oak tree, native to California.

Branch of Blue Oak

Also known as Quercus douglasii. The branch of a Blue Oak tree, native to California.

Also known as Quercus macrocarpa. The branch of the Bur Oak tree, native to North America.

Branch of Bur Oak

Also known as Quercus macrocarpa. The branch of the Bur Oak tree, native to North America.

Also known as Quercus kelloggii. The branch of a California Black Oak, native to western North America.

Branch of California Black Oak

Also known as Quercus kelloggii. The branch of a California Black Oak, native to western North America.

Also known as Quercus chrysolepis. The branch of a Canyon Live Oak tree, native to the southwestern North America.

Branch of Canyon Live Oak

Also known as Quercus chrysolepis. The branch of a Canyon Live Oak tree, native to the southwestern…

Also known as Quercus chapmanii. The branch of a Chapman Oak tree, native to the southeastern United States.

Branch of Chapman Oak

Also known as Quercus chapmanii. The branch of a Chapman Oak tree, native to the southeastern United…

Also known as Quercus pagoda. The branch of a Cherrybark Oak tree, native to the southern United States.

Branch of Cherrybark Oak

Also known as Quercus pagoda. The branch of a Cherrybark Oak tree, native to the southern United States.

Also known as Quercus prinus. The branch of a Chestnut Oak tree, native to the eastern United States.

Branch of Chestnut Oak

Also known as Quercus prinus. The branch of a Chestnut Oak tree, native to the eastern United States.

Also known as Quercus agrifolia. The branch of a Coast Live Oak, native to the California Floristic Province.

Branch of Coast Live Oak

Also known as Quercus agrifolia. The branch of a Coast Live Oak, native to the California Floristic…

Also known as Quercus dumosa. The branch of a Coastal Sage Scrub Oak tree, native to Mexico and California.

Branch of Coastal Sage Scrub Oak

Also known as Quercus dumosa. The branch of a Coastal Sage Scrub Oak tree, native to Mexico and California.

Also known as Quercus velutina. The branch of an Eastern Black Oak tree, native to eastern North America.

Branch of Eastern Black Oak

Also known as Quercus velutina. The branch of an Eastern Black Oak tree, native to eastern North America.

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

Branch of Emory Oak

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

Also known as Quercus gambelii. The branch of a Gambel Oak tree, native to the central southwestern United States and northwestern Mexico.

Branch of Gambel Oak

Also known as Quercus gambelii. The branch of a Gambel Oak tree, native to the central southwestern…

Also known as Quercus garryana. The branch of a Garry Oak tree, native from southern California to southwestern British Columbia.

Branch of Garry Oak

Also known as Quercus garryana. The branch of a Garry Oak tree, native from southern California to southwestern…

Also known as Quercus georgiana. A branch of a Georgia Oak tree, native to southeastern United States.

Branch of Georgia Oak

Also known as Quercus georgiana. A branch of a Georgia Oak tree, native to southeastern United States.

Also known as Quercus wislizeni. The branch of an Interior Live Oak tree, native to California.

Branch of Interior Live Oak

Also known as Quercus wislizeni. The branch of an Interior Live Oak tree, native to California.

Also known as Quercus tomentella. The branch of an Island Oak tree, native to the coast of Caifornia.

Branch of Island Oak

Also known as Quercus tomentella. The branch of an Island Oak tree, native to the coast of Caifornia.

Also known as Quercus myrtifolia. The branch of a Myrtle Oak tree.

Branch of Myrtle Oak

Also known as Quercus myrtifolia. The branch of a Myrtle Oak tree.

Also known as Quercus ellipsoidalis. The branch of a Northern Pin Oak tree, native to the northern midwest United States.

Branch of Northern Pin Oak

Also known as Quercus ellipsoidalis. The branch of a Northern Pin Oak tree, native to the northern midwest…

Also known as Quercus rubra. The branch of a Northern Red Oak tree, native to northeastern United States.

Branch of Northern Red Oak

Also known as Quercus rubra. The branch of a Northern Red Oak tree, native to northeastern United States.

Also known as Quercus texana. A species of oak tree native to the southern United States.

Branch of Nuttall's Oak

Also known as Quercus texana. A species of oak tree native to the southern United States.

Oaks are easily recognized by their characteristic leaves and especially by their peculiar fruit, the well-known acorn.

Oak

Oaks are easily recognized by their characteristic leaves and especially by their peculiar fruit, the…

Oak trees grow in many parts of the country.

Oak

Oak trees grow in many parts of the country.

Also known as Quercus suber. It is a medium-sized oak tree, and it is the primary source of cork for wine bottle stoppers. It is commonly found in southwest Europe and northwest Africa.

Cork Oak

Also known as Quercus suber. It is a medium-sized oak tree, and it is the primary source of cork for…

Also known as Quercus cerris. A greenish-white tree with a dark gray bark. The flower produced is a cylindrical cluster of yellow flowers, which are usually wind-pollinated. The fruit is a large acorn, which is bicoloured with an orange bottom half grading to a green-brown tip.

Turkey Oak

Also known as Quercus cerris. A greenish-white tree with a dark gray bark. The flower produced is a…

White oak is the common name of <i>quercus alba</i>.

White Oak

White oak is the common name of quercus alba.

Also known as Quercus lyrata. The branch of an Overcup Oak tree, native to the wetlands of the United States.

Branch of Overcup Oak

Also known as Quercus lyrata. The branch of an Overcup Oak tree, native to the wetlands of the United…

Also known as Quercus engelmannii. The branch of a Pasadena Oak tree, native to California.

Branch of Pasadena Oak

Also known as Quercus engelmannii. The branch of a Pasadena Oak tree, native to California.

The branch of a Quercus acuminata tree, a species of oak tree.

Branch of Quercus Acuminata

The branch of a Quercus acuminata tree, a species of oak tree.

The branch of a Quercus brevifolia, a species of oak tree.

Branch of Quercus Brevifolia

The branch of a Quercus brevifolia, a species of oak tree.

The branch of a Quercus heterophylla, a species of oak tree.

Branch of Quercus Heterophylla

The branch of a Quercus heterophylla, a species of oak tree.

The branch of a Quercus hypoleuca, a species of oak.

Branch of Quercus Hypoleuca

The branch of a Quercus hypoleuca, a species of oak.

The branch of a Quercus Minor tree, a species of oak.

Branch of Quercus Minor

The branch of a Quercus Minor tree, a species of oak.

The branch of a Quercus oblongifolia tree, a species of oak.

Branch of Quercua Oblongifolia

The branch of a Quercus oblongifolia tree, a species of oak.

The branch of a Quercus platanoides, a species of oak tree.

Branch of Quercus Platanoides

The branch of a Quercus platanoides, a species of oak tree.

The branch of a Quercus Reticulata, a species of oak tree.

Branch of Quercus Reticulata

The branch of a Quercus Reticulata, a species of oak tree.

The branch of a Quercus undulata tree, a species of oak. Native to the southwestern United States.

Branch of Quercus Undulata

The branch of a Quercus undulata tree, a species of oak. Native to the southwestern United States.

This shows the staminate flower of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

Scarlet Oak Flowers

This shows the staminate flower of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

This shows the pistillate flower of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

Scarlet Oak Flowers

This shows the pistillate flower of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

Also known as Quercus coccinea. The branch of a red oak tree native to the eastern United States.

Branch of Scarlet Oak

Also known as Quercus coccinea. The branch of a red oak tree native to the eastern United States.

Also known as Quercus breviloba. The branch of a Shallow-lobed Oak tree, native to the southern United States and northern Mexico.

Branch of Shallow-Lobed Oak

Also known as Quercus breviloba. The branch of a Shallow-lobed Oak tree, native to the southern United…

Also known as Quercus imbricaria. The branch of a Shingle Oak tree, native primarily to the midwestern North American regions.

Branch of Shingle Oak

Also known as Quercus imbricaria. The branch of a Shingle Oak tree, native primarily to the midwestern…

Also known as Quercus virginiana. The branch of a Southern Live Oak tree, native to the southeastern United States.

Branch of Southern Live Oak

Also known as Quercus virginiana. The branch of a Southern Live Oak tree, native to the southeastern…

This shows two leaves of Spanish Oak, Quercus digitata, (Keeler, 1915).

Spanish Oak Leaves

This shows two leaves of Spanish Oak, Quercus digitata, (Keeler, 1915).