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Quercus rubra, the northern red oak, is an oak tree in the red oak group (Quercus section Lobatae). It is a native of North America, in the eastern and central United States and southeast and south-central Canada. It has been introduced to small areas in Western Europe, where it can frequently be seen cultivated in gardens and parks.
Several trees normally have marcescent leaves such as oak (Quercus), [5] beech (Fagus) and hornbeam (Carpinus), or marcescent stipules as in some but not all species of willows . [6] All oak trees may display foliage marcescence, even species that are known to fully drop leaves when the tree is mature. [7] Marcescent leaves of pin oak (Quercus ...
Quercus falcata, also called southern red oak, spanish oak, [4] bottomland red oak or three-lobed red oak is an oak (part of the genus Quercus).Native to the southeastern United States, it gets its name the "Spanish Oak" as these are the areas of early Spanish colonies, whilst "southern red oak" comes from both its range and leaf color during late summer and fall. [5]
Slime flux, also known as bacterial slime or bacterial wetwood, is a bacterial disease of certain trees, primarily elm, cottonwood, poplar, boxelder, ash, aspen, fruitless mulberry and oak. A wound to the bark, caused by pruning, insects, poor branch angles or natural cracks and splits, causes sap to ooze from the wound. Bacteria may infect ...
Quercus palustris, also called pin oak, [4] swamp oak, or Spanish oak, [5] is a tree in the red oak section (Quercus sect. Lobatae) of the genus Quercus. Pin oak is one of the most commonly used landscaping oaks in its native range due to its ease of transplant, relatively fast growth, and pollution tolerance.
They come out of the bud involute, bright red, covered with rusty down above and white tomentum below. When full grown are dark green, smooth and shining above, pale green or pale brown, downy below; midribs stout yellow, grooved above, primary veins slender. In autumn they become dark red above, pale beneath, midribs darken, then the leaf.
Leaves. Quercus emoryi is a wintergreen tree in the red oak group, retaining its leaves throughout the winter until new leaves are produced in spring. It is a large shrub or small tree from 5–17 metres (16–56 feet) tall. The leaves are 3–6 centimetres (1– 2 + 1 ⁄ 2 inches
The leaves and twigs can also provide browse for white-tailed deer. [6] Oak wilt can attack all red oaks, including the Shumard oak. Other diseases that attack Shumard oaks are various fungi that can grow on the leaves, powdery mildew, canker diseases, and shoestring root. [6] [failed verification]