''Quercus glaucescens'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

oak An oak is a hardwood tree or shrub in the genus ''Quercus'' of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisp ...

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to Mexico.

References

{{Taxonbar, from=Q15338521 glaucescens Endemic oaks of Mexico Plants described in 1809 Flora of the Sierra Madre Occidental Flora of the Sierra Madre Oriental Flora of the Sierra Madre de Oaxaca Flora of the Sierra Madre del Sur Flora of the Trans-Mexican Volcanic Belt Flora of Los Tuxtlas Taxa named by Aimé Bonpland