Madrean Pine/Oak Woodland occupies a belt from about 5,000 to 7,000 or more feet in elevation between oak woodland and below pure pine forest above. Of course Pinus and Quercus species dominate the overstory, while the understory is often sparse. Oak and pine species vary with latitude and other factors. As one heads south the amount of pine/oak woodland, as well as numbers of pine and oak species, increase.
It is primarily a vegetation community of Mexico and is on display heavily in the Sierra Madre Occidental northward to the southern Arizona and New Mexico's Sky Islands.