Red Oaks

Quercus rubra

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 grows from the north end of the Great Lakes, east to Nova Scotia, south as far as Georgia, Mississippi, Alabama, and Louisiana, and west to Oklahoma, Kansas, Nebraska, and Minnesota. It has been introduced to small areas in Western Europe, where it can frequently be seen cultivated in gardens and parks. It prefers good soil that is slightly acidic. Often simply called red oak, northern red oak is so named to distinguish it from southern red oak (Q. falcata), also known as the Spanish oak. Northern Red Oak is sometimes called champion oak. It is also the state tree of New Jersey and the provincial tree of Prince Edward Island.

Oak gall

Quercus buckleyi Nixon & Dorr

This species was named for Samuel B. Buckley, botanist and state geologist of Texas. Buckley oak leaves are similar to the Texas red oak,Q. texana, but the two species do not overlap in their distributions. This species should be considered a conservation concern. The largest known Buckley oak grows in Travis County, Texas.

Quercus rubra

Source and Reference.                           

Tekiela, Stan. Trees of Texas: Field Guide. Cambridge, Minn: Adventure Publications, 2009. Print.

Wrede, Jan. Trees, Shrubs, and Vines of the Texas Hill Country: A Field Guide. College Station: Texas A & M University Press, 2010. Internet resource.