Juniperus arizonica

from Wikipedia, the free encyclopedia
Juniperus arizonica
Systematics
Order : Conifers (Coniferales)
Family : Cypress family (Cupressaceae)
Subfamily : Cupressoideae
Genre : Juniper ( Juniperus )
Section : Sabina
Type : Juniperus arizonica
Scientific name
Juniperus arizonica
RP Adams

Juniperus arizonica is a plant from the family of the cypress family (Cupressaceae). It is native to northern Mexico and the southern United States.

description

Juniperus arizonica grows as a large evergreen shrub or small tree that can reach heights of 3 to 8 meters. The trunk usually branches out around one meter above the ground. The thin bark is brown in color and flakes off in elongated strips, while the scaly twig bark is ash gray. In the case of shrubs, the branches go upwards and in the case of trees they go straight off the trunk. They form a flattened, spherical or irregular crown . The species can grow out of the stump again after forest fires or after the plant has been felled.

The scale-like needles provided with glands are sawed on the edges. The top of the needle is whitish-blue-green in color.

Juniperus arizonica is dioecious-dioecious ( diocesan ), and the seeds ripen from late autumn to early winter. The berry-shaped and juicy cones are spherical to egg-shaped with a thickness of 6 to 7 millimeters. When ripe they are reddish in color and have a white-blue to blue-green tint as well as yellow-orange, orange or dark red patterns. Each of the cones bears seeds one to two, 4 to 5 millimeters long.

Distribution and location

The natural range of Juniperus arizonica is in Mexico as well as in the USA. In Mexico, it includes the northeast of the state of Sonora . In the USA the species is found south of the Mogollon Rim in Arizona as well as in southwest New Mexico and west Texas .

Juniperus arizonica thrives at altitudes of 980 to 2200 meters. The species is mainly found in Bouteloua steppes and on the stony slopes that border them.

use

Among other things, the wood is processed into fence posts.

Systematics

It was first described as Juniperus arizonica in 1994 by Robert Phillip Adams in Biochemical Systematics and Ecology 22 (7) , p. 708. Before that, it was considered a variety of red berry juniper ( Juniperus coahuilensis ). A work published by Adams in 2006 confirmed the species status using DNA analysis.

swell

  • Juniperus arizonica . In: Phytologia . Volume 90, No. 3 . Texensis Publishing, December 2008, ISSN  0031-9430 , p. 260–261 (English, online [accessed February 10, 2012]).

Individual evidence

  1. ↑ a b c d e f Juniperus arizonica . In: Phytologia . Volume 90, No.  3 . Texensis Publishing, December 2008, ISSN  0031-9430 , p. 260–261 (English, online [accessed February 10, 2012]).
  2. ↑ a b Juniperus coahuilensis var. Arizonica. In: Germplasm Resources Information Network. www.ars-grin.gov, accessed on February 10, 2012 (English).
  3. ↑ Juniperus arizonica at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 10, 2012.

Web link