About Quercus polymorpha Schltdl. & Cham.
Quercus polymorpha Schltdl. & Cham. is a subevergreen tree that can reach up to 20 meters (67 feet) in height. Its bark is gray or brown. Its leaves are elliptical or egg-shaped, growing up to 15 centimeters (6 inches) long, and can be unlobed or have a small number of shallow rounded lobes. This species ranges across eastern and southern Mexico, where it occurs in the Sierra Madre Oriental, Sierra Madre de Oaxaca, and the Chiapas Highlands of southeastern Mexico, with scattered locations across the Mexican Plateau, Trans-Mexican Volcanic Belt, and Sierra Madre Occidental. Within Mexico, it has been recorded in the states of Nuevo León, Tamaulipas, San Luis Potosí, Querétaro, Hidalgo, Veracruz, Puebla, Oaxaca, Chiapas, Coahuila, Guanajuato, Jalisco, Sinaloa, Michoacán, and Morelos. There is one known single population of this species in Val Verde County, southern Texas, USA. Scattered populations also exist in the Guatemalan Highlands of central Guatemala, covering the departments of Chiquimula, Huehuetenango, Jalapa, and Zacapa, as well as in western Honduras. Quercus polymorpha grows in a wide variety of habitat types. These include deep canyons in the Sierra Madre Oriental, riparian gallery forests, the margins of thorn scrub forest, tropical dry forests, the lower margins of montane oak–pine forests, and cloud forests. It can be found growing at elevations ranging from 400 to 2,100 meters.
