Quercus radiata

Quercus radiata is an endangered species of oak native to Mexico.

Description
Quercus radiata is a small evergreen tree that typically reaches 4 to 9 m in height.

Distribution and habitat
It is native to the southern Sierra Madre Occidental, including southern Durango, eastern Nayarit, western Zacatecas, and northern Jalisco. Its extent of occurrence is 13,000 km2, with a low density within that range and an estimated area of occupancy between 64 and 375 km2.

It is found on thin igneous soils and rocky outcrops between 2000 and 2600 m in elevation, where it form open stands with Pinus lumholtzii and other oaks and pines.

Its range is mostly outside protected areas and subject habitat degradation from timber harvesting and encroachment by roads and agriculture.