Alnus oblongifolia
Encyclopedia
Alnus oblongifolia is a large alder, birch
-family tree up to 72ft, from the southwestern United States
and northern Sonora
Mexico
. It grows across Arizona
into western New Mexico
mountain ranges. In central Arizona across the transition zone
to the White Mountains
region of eastern Arizona–western New Mexico border.
Besides the range extension from central Arizona, elsewhere in New Mexico it occurs only in scattered mountain range locales. In southern Arizona south of the Mogollon Rim, also in two mountain regions, and in neighboring Sonora in regions at the north of the Sierra Madre Occidental
cordillera near Arizona's southeast Madrean Sky Island
ranges of sky island
s. Isolated mountain locales also occur in a region of southwest Chihuahua and neighboring northwest Durango
, part of the eastern Sierra Madre Occidentals.
Birch
Birch is a tree or shrub of the genus Betula , in the family Betulaceae, closely related to the beech/oak family, Fagaceae. The Betula genus contains 30–60 known taxa...
-family tree up to 72ft, from the southwestern United States
Southwestern United States
The Southwestern United States is a region defined in different ways by different sources. Broad definitions include nearly a quarter of the United States, including Arizona, California, Colorado, Nevada, New Mexico, Oklahoma, Texas and Utah...
and northern Sonora
Sonora
Sonora officially Estado Libre y Soberano de Sonora is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo....
Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
. It grows across Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
into western New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...
mountain ranges. In central Arizona across the transition zone
Arizona transition zone
The Arizona transition zone, or Transition zone is a diagonal northwest-by-southeast region across central Arizona. The region is a transition from the higher elevation Colorado Plateau to the northeast in Northeast Arizona and the Basin and Range region of southwest and south regions of lower...
to the White Mountains
White Mountains (Arizona)
The White Mountains of Arizona are a mountain range and mountainous region in the eastern part of the state, near the border with New Mexico; it is a continuation from the west of the Arizona transition zone–Mogollon Rim, with the Rim ending in western New Mexico...
region of eastern Arizona–western New Mexico border.
Besides the range extension from central Arizona, elsewhere in New Mexico it occurs only in scattered mountain range locales. In southern Arizona south of the Mogollon Rim, also in two mountain regions, and in neighboring Sonora in regions at the north of the Sierra Madre Occidental
Sierra Madre Occidental
The Sierra Madre Occidental is a mountain range in western Mexico.-Setting:The range runs north to south, from just south of the Sonora–Arizona border southeast through eastern Sonora, western Chihuahua, Sinaloa, Durango, Zacatecas, Nayarit, Jalisco, Aguascalientes to Guanajuato, where it joins...
cordillera near Arizona's southeast Madrean Sky Island
Madrean sky islands
The Madrean Sky Islands are enclaves of Madrean pine-oak woodlands, found at higher elevations in a complex of small mountain ranges in southern and southeastern Arizona, southwestern New Mexico, and northwestern Mexico. The sky islands are surrounded at lower elevations by the Sonoran and...
ranges of sky island
Sky island
Sky islands are mountains that are isolated by surrounding lowlands of a dramatically different environment, a situation which, in combination with the altitudinal zonation of ecosystems, has significant implications for natural habitats. Endemism, vertical migration, and relict populations are...
s. Isolated mountain locales also occur in a region of southwest Chihuahua and neighboring northwest Durango
Durango
Durango officially Estado Libre y Soberano de Durango is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. The state is located in Northwest Mexico. With a population of 1,632,934, it has Mexico's second-lowest population density, after Baja...
, part of the eastern Sierra Madre Occidentals.
Refrerencec
- Little. Atlas of United States Trees, Volume 3, Minor Western Hardwoods, Little, Elbert L, 1976, US Government Printing Office. Library of Congress No. 79-653298. Map 12, Alnus oblongifolia.