Quercus gravesii

Quercus gravesii (also called Chisos red oak or Grave's oak) is an uncommon North American species of oak in the red oak section Quercus section Lobatae in the beech family. It is found in Mexico and the United States.
"Quercus gravesii" is a deciduous tree up to 13 meters (43 feet) tall. Leaves are hairless, each with 3-5 pointed and awned lobes. Bark is black.
Distribution.
Grave's oak can be found in three areas of southwest Texas, including Big Bend National Park, and mountain ranges of neighboring Coahuila state.
Graves Oak is closely related to shumard oak and emory oak