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An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisphere; it includes some 500 species, both deciduous and evergreen. Fossil oaks date back to the Middle Eocene.
The genus Quercus contains about 500 known species, plus about 180 hybrids between them. [1] The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus Quercus was divided into the two subgenera Cyclobalanopsis, the ring-cupped oaks, and Quercus, which included
Toxicodendron: poison sumacs (including poison ivy and poison oak) Toxicodendron vernix: poison sumac Anacardiaceae (cashew family) Toxicodendron vernicifluum: Chinese lacquer tree Anacardiaceae (cashew family) Toxicodendron succedaneum: Japanese Hazenoki tree Anacardiaceae (cashew family) Toxicodendron striatum: manzanillo Anacardiaceae ...
Quercus robur, the pedunculate oak or English oak, [3] [4] is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to most of Europe and western Asia , and is widely cultivated in other temperate regions.
Live oak was widely used in early American butt shipbuilding.Because of the trees' short height and low-hanging branches, lumber from live oaks was used in curved parts of the frame, such as knee braces (single-piece, L-shaped braces that spring inward from the side and support the deck), in which the grain runs perpendicular to structural stress, making for exceptional strength.
The Bedford Oak is a 500-year-old white oak tree that sits in the town of Bedford in New York. It is the mascot of the town. It sits at the corner of the Hook Road and the old Bedford Road (now Cantitoe Street). The ground the tree stands on was deeded to the Town of Bedford in 1942 by Harold Whitman in memory of his wife, Georgia Squires Whitman.
The Seven Sisters Oak, estimated to be between 500 and 1,000 years old, is the largest certified southern live oak tree. The Angel Oak on Johns Island, South Carolina, near Charleston is estimated to be 400–500 years old. It has a trunk circumference of 8.5 m (28 ft), height of 20.3 m (66 ft 6 in) and limb spread of 57 m (187 ft).
Economic uses are primarily as an ornamental tree and the wood for pulp and paper production, but also for lumber; it is often marketed as "red oak" wood. [citation needed]The willow oak is one of the most popular trees for horticultural planting, due to its rapid growth, hardiness, balance between axial and radial dominance, ability to withstand both sun and shade, light green leaf color and ...