Arizona oak

Arizona oak
	Arizona oak ( Quercus arizonica )
Systematics
	Rosids
	Eurosiden I
Order :	Beech-like (Fagales)
Family :	Beech family (Fagaceae)
Genre :	Oak trees ( Quercus )
Type :	Arizona oak
Scientific name
	Quercus arizonica
	Coffin.

The Arizona-oak ( Quercus arizonica ) and Arizona white oak called, is a plant of the genus of oak ( Quercus ) within the family of the beech plants (Fagaceae). It is common in the southern United States and northern Mexico .

description

Vegetative characteristics

The Arizona oak grows as an evergreen or semi-evergreen, small to medium-sized tree that can reach heights of up to 18 meters. The bark is scaly and the twigs are yellowish, have a diameter of 1.5 to 2.5 millimeters and are initially tomentose, but after a while they become cloudy gray. The buds are red-brown, egg-shaped and about 3 millimeters in size.

The alternate leaves are arranged in a petiole and a leaf blade. The petiole is 3 to 10 millimeters long. The leaf blade is elliptical or oblong to narrow obovate and with a rounded upper end. The leaf blade is flat to slightly convex, thick and leathery, mostly stiff and heart-shaped or rounded and weakly heart-shaped.

Generative characteristics

The flowering time is in spring between April and May . The flowers are yellow or green.

The acorns hang individually or in pairs and are cup-shaped or cup-shaped.

Distribution area

Occurrence

The distribution area of Quercus arizonica is in western North America in the southern US states of Arizona , New Mexico and Texas and in the Mexican states of Chihuahua , Coahuila , Durango and Sonora . It occurs in the United States from central Arizona to southwestern New Mexico. There are isolated populations in western Texas and northern Mexico. In Mexico, the areas from Coahuila extend westward to Baja California Sur . There are fewer than 20 localities in Baja California Sur.

The Arizona oak is found at altitudes of 1520 to 2130 meters. It thrives best on dry, stony and sandy soils and sunny to partially shaded locations.

Systematics

The first description of Quercus arizonica was in 1895 by Charles Sprague Sargent in Garden and Forest; a Journal of Horticulture, Landscape Art and Forestry , Volume 8, page 89. A synonym of Quercus arizonica coffin. is Quercus sacame Trelease.

The species Quercus arizonica belongs to the section of white oaks ( Quercus ) within the genus Quercus .

literature

Kevin C. Nixon: Fagaceae. : In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 3 - Magnoliidae and Hamamelidae , Oxford University Press, New York and Oxford, 1997, ISBN 0-19-511246-6 : Quercus arizonica - online with the same text as the printed work.

Individual evidence

↑ ^a ^b ^c Kevin C. Nixon: Fagaceae. : In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 3 - Magnoliidae and Hamamelidae , Oxford University Press, New York and Oxford, 1997, ISBN 0-19-511246-6 : Quercus arizonica - online with the same text as the printed work.
↑ ^a ^b Diane S. Pavek: Quercus arizonica. 1994 In: Fire Effects Information System. = FEIS of the US Department of Agriculture. online , accessed October 10, 2019

Web links

Commons : Arizona Oak ( Quercus arizonica ) - Collection of images, videos, and audio files

Lady Bird Johnson Wildflower Center , Austin, Texas.

[FoNA-1] Kevin C. Nixon: Fagaceae. : In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 3 - Magnoliidae and Hamamelidae , Oxford University Press, New York and Oxford, 1997, ISBN 0-19-511246-6 : Quercus arizonica - online with the same text as the printed work.

[FEIS-2] Diane S. Pavek: Quercus arizonica. 1994 In: Fire Effects Information System. = FEIS of the US Department of Agriculture. online , accessed October 10, 2019