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Quercus laevis is a small tree, sometimes shrubby, typically only 8–10 meters (26–33 feet) tall, though occasionally reaching 28 m (92 ft). The leaves are variable in size, mostly 10–17 centimeters (4– 6 + 3 ⁄ 4 inches) long but occasionally just 8 cm (3 + 1 ⁄ 4 in) or as much as 30 cm (12 in) long. They have 3–7 slender lobes ...
Coahuila scrub oak (Quercus intricata), in the US, it is reported at only two sites: One in the Chisos Mountains inside Big Bend National Park, and the other 15 miles SW of Van Horn. Gambel oak (Quercus gambelii) [note 1] Gray oak (Quercus grisea), in the mountains of the southwestern United States and northern Mexico. Emory oak (Quercus emoryi)
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 sect. Quercus has been known, either in whole or part, by a variety of names in the past, including Quercus sect. Albae, Quercus sect. Macrocarpae and Quercus sect. Mesobalanus. Members of the section may be called white oaks. The section includes all white oaks from North America (treated by Trelease as subgenus Leucobalanus). [2]
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.
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]
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 .
This leads to a lack of oak seedings and saplings to grow and replace mature oaks (Quercus spp.) once they die and growth in abundance of new species. Deer browse is also a large threat to the plant community as white-tailed deer (Odocoileus virginianus) use oak seedlings for consumption at growing rates with increasing population sizes. [6]