''Quercus tuberculata'' is a species of

oak tree An oak is a hardwood tree or shrub in the genus ''Quercus'' of the Fagaceae, 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 Northe ...

which is native to mountains of northeastern and northwestern

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

(

Baja California Sur Baja California Sur, officially the Free and Sovereign State of Baja California Sur, is a state in Mexico. It is the 31st and last state to be admitted, in 1974. It is also the second least populated Mexican state and the ninth-largest state by ...

Sonora Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 ...

, Chihuahua,

Sinaloa Sinaloa (), officially the (), is one of the 31 states which, along with Mexico City, compose the Federal Entities of Mexico. It is divided into 18 municipalities, and its capital city is Culiacán Rosales. It is located in northwest Mexic ...

Michoacán Michoacán, formally Michoacán de Ocampo, officially the Free and Sovereign State of Michoacán de Ocampo, is one of the 31 states which, together with Mexico City, compose the Political divisions of Mexico, Federal Entities of Mexico. The stat ...

Durango Durango, officially the Free and Sovereign State of Durango, is one of the 31 states which make up the Political divisions of Mexico, 32 Federal Entities of Mexico, situated in the northwest portion of the country. With a population of 1,832,650 ...

, and

Nuevo León Nuevo León, officially the Free and Sovereign State of Nuevo León, is a Administrative divisions of Mexico, state in northeastern Mexico. The state borders the Mexican states of Tamaulipas, Coahuila, Zacatecas, and San Luis Potosí, San Luis ...

).McVaugh, Rogers. 1974. Flora Novo-Galiciana: Fagaceae. Contributions from the University of Michigan Herbarium 12: 86-88
in English, line drawing on page 87 It is placed in ''Quercus'' section ''Quercus''.

Description

''Quercus tuberculata'' is a deciduous tree up to tall, with a trunk up to in diameter. The

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

are egg-shaped, thick and leathery, up to 15 cm long, with wavy edges but no teeth or lobes.Liebmann, Frederik Michael. 1854. Oversigt over det kongelige danske videnskabernes selskabs forhandlinger og dets medlemmers arbeider. 1854: 181

Range and habitat

''Quercus tuberculata'' is native to northwestern Mexico, principally in the

Sierra Madre Occidental The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American C ...

of Sonora, Chihuahua, Sinaloa, Durango, and Nayarit states. It is also found in the

Sierra de la Laguna The Sierra de la Laguna is a mountain range at the southern end of the Baja California peninsula in Mexico, and is the southernmost range of the Peninsular Ranges System. It is located in La Paz Municipality, Baja California Sur, La Paz Municipa ...

of the southern Baja California Peninsula, in the northern

Sierra Madre Oriental The Sierra Madre Oriental () is a mountain range in northeastern Mexico. The Sierra Madre Oriental is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that ...

of Nuevo León, and in Michoacán in central Mexico. The species inhabits oak and pine–oak forests and woodlands between 900 and 2000 meters elevation. It is typically found in areas where average annual rainfall is between 500 and 600 mm, and the average annual temperature is between 18 and 24 °C. It is commonly found on slopes between 30º and 40º, and near streams and other water sources. ''Q. tuberculata'' prefers slightly acidic soils low in organic matter and with a somewhat sandy texture. It is often a dominant species where it occurs. The species has an estimated

extent of occurrence Extent may refer to: Computing * Extent (file systems), a contiguous region of computer storage medium reserved for a file * Extent File System, a discontinued file system implementation named after the contiguous region * Extent, a chunk of st ...

(EOO) of 1,015,800 km², and an estimated

area of occupancy Area is the measure of a region's size on a surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while ''surface area'' refers to the area of an open surface or the boundary of a three-dimen ...

(AOO) of 536 km². The species' population is generally stable, and it is abundant within its range. Its conservation status is assessed as

Least Concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

References

{{Taxonbar, from=Q15339505 tuberculata Plants described in 1854 Endemic oaks of Mexico Flora of the Sierra Madre Occidental Flora of the Sierra Madre Oriental Flora of Baja California Sur