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The larvae feed on the leaves of oak trees in the eastern United States and southeastern Canada and are a major defoliator of oak trees, which can lead to tree mortality. In Pennsylvania in the late 1960s and early 1970s, oak leafrollers defoliated over 1,045,000 acres (423,000 ha).
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 leaves of the swamp chestnut oak are simple (not compound), 4–11 inches (10–28 centimetres) long and 2–7 in (5–18 cm) broad, with 15–20 lobe-like, rounded simple teeth on each side, similar to those of chestnut oak and chinkapin oak (Quercus muehlenbergii), although they generally do not achieve the more slender form that the leaves of those trees may exhibit at times.
Quercus gambelii trees differ in size from one location to another. The average mature height is from 3–9 metres (10–30 feet), but occasionally reaches heights of 18 m (59 ft) in some locations. The average mature height is from 3–9 metres (10–30 feet), but occasionally reaches heights of 18 m (59 ft) in some locations.
Quercus ilex, the holm oak, [2] [3] also (ambiguously, as many oaks are evergreen) evergreen oak, [4] is a large evergreen oak native to the Mediterranean region. It is a member of the section Ilex of the genus, [ 5 ] [ 6 ] with acorns that mature in a single summer.
Live oak can be found dominating some maritime forests, especially where fire periodicity and duration are limited. Live oak is found on higher topographic sites as well as hammocks in marshes and swamps. In general, southern live oak hugs the coastline and is rarely found more than 90 m (300 ft) above sea level.
Wistman's Wood is one of Britain's last remaining ancient temperate rainforests and one of three remote high-altitude oakwoods on Dartmoor in Devon, England. The first written document to mention Wistman's Wood date to the 17th century, while more recent tree-ring studies show that individual trees could be many hundreds of years old.
The cork oak grows as an evergreen tree, reaching an average height of 10 to 15 metres (33 to 49 feet) or in rare cases up to 25 m and a trunk diameter of 50 to 100 centimetres (20 to 39 inches). It forms a dense and asymmetrical crown that starts at a height of 2–3 m (6 + 1 ⁄ 2 –10 ft) and spreads widely in free-standing trees. The crown ...