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Quercus ilex, the evergreen oak, [2] holly oak [3] or holm oak is a large evergreen oak native to the Mediterranean region. It is a member of the Ilex section of the genus, [ 4 ] [ 5 ] with acorns that mature in a single summer.
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.
Quercus chrysolepis is an evergreen tree with significant-sized spreading, horizontal branches, and a broad, rounded crown; it attains a height of 6–30 meters (20–100 feet) and often forms as a shrub. [4] The trunk diameter typically ranges from 30 to 100 centimeters (12 to 39 inches). Exceptionally large specimens are found in the ...
Quercus agrifolia, the California live oak, [3] or coast live oak, is an evergreen [4] live oak native to the California Floristic Province.Live oaks are so-called because they keep living leaves on the tree all year, adding young leaves and shedding dead leaves simultaneously rather than dropping dead leaves en masse in the autumn like a true deciduous tree. [5]
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).
California black oak leaf and bark. Quercus kelloggii typically grows from 9–25 meters (30–82 feet) in height and from 0.3–1.4 m (1– 4 + 1 ⁄ 2 ft) in diameter. Large trees may exceed 36 m (118 ft) in height and 1.6 m (5 ft 3 in) diameter, with the record holder measuring 38 m (124 ft) tall and 2.7 m (9 ft) thick (in the Siskiyou National Forest in Oregon). [2]
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.
Quercus garryana is an oak tree species of the Pacific Northwest, with a range stretching from southern California to southwestern British Columbia. [3] It is commonly known as the Garry Oak, Oregon white oak or Oregon oak. It grows from sea level to an altitude of 690 feet (210 metres) in the northern part of its range, and from 980 to 5,900 ...