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Quercus nigra, the water oak, is an oak in the red oak group (Quercus sect. Lobatae), native to the eastern and south-central United States, found in all the coastal states from New Jersey to Texas, and inland as far as Oklahoma, Kentucky, and southern Missouri. [3] It occurs in lowlands and up to 450 meters (1,480 feet) in elevation.
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
Quercus stellata, the post oak or iron oak, is a North American species of oak in the white oak section. It is a slow-growing oak that lives in dry areas on the edges of fields, tops of ridges, and also grows in poor soils, and is resistant to rot, fire , and drought .
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 ilicifolia is a deciduous tree or shrub growing occasionally reaching a height of 6 meters (20 feet) but usually much smaller. [4] [5] It is gangly and can form a dense thicket. The plant grows from a large taproot, which reach 20 centimeters (8 inches) in thickness. The taproot lives a long time, producing several generations of above ...
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.
In the northern part of its range, Quercus velutina is a relatively small tree, reaching a height of 20–25 metres (66–82 feet) and a diameter of 90 centimetres (35 inches), but it grows larger in the south and center of its range, where heights of up to 42 m (138 ft) are known.
Quercus laurifolia is a tree growing to 20–24 meters (65–80 feet) (rarely to 40 m or 130 ft) tall, with a large, circular crown. The leaves are broad lanceolate, 2.5–12.7 centimeters (1–5 inches) long and 1.3–4.4 cm (1 ⁄ 2 – 1 + 3 ⁄ 4 in) broad, and unlobed (very rarely three-lobed) with an entire margin and a bristle tip; they typically fall just as the new leaves start to ...