Quercus buckleyi
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Fagaceae
Genus:	Quercus
Subgenus:	Quercus subg. Quercus
Section:	Quercus sect. Lobatae
Species:	Q. buckleyi
Binomial name
Quercus buckleyi Nixon & Dorr
Synonyms[2][3]
Quercus texana Young Quercus rubra var. texana Engelm.

Quercus buckleyi, commonly known as Texas red oak, Buckley's oak, or Spanish oak^[4][5] is a species of flowering plant.^[6][7] It is endemic to the southern Great Plains of the United States (Oklahoma and Texas).^[8]

Buckley's oak is smaller and more likely to be multitrunked than its close relative, the Shumard oak (Q. shumardii). The two species are interfertile, and hybrids are common along a line from Dallas to San Antonio, Texas. Texas red oak usually is 30 to 50 feet (9.1 to 15.2 meters) tall at maturity, and seldom reaches a height of more than 75 feet (23 meters).^[9]

Quercus buckleyi was formerly known as Q. texana, but under botanical rules of priority, that name properly refers to Nuttall's oak.^[3] This has led to much confusion.^[9][10]

It is a highly regarded ornamental and shade tree. In autumn, the leaves turn vivid red and orange.

• Horticulture, Texas A&M University, Texas Red Oak
• Texas Red Oak at the Oklahoma Biological Survey
• Texas Red Oak images at Central Texas Plants (University of Texas)
• Media related to Quercus buckleyi at Wikimedia Commons