Juniperus comitana
| Juniperus comitana | ||||||||||||
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| Juniperus comitana | ||||||||||||
| Martínez |
Juniperus Comitana is a plant from the family of the cypress family (Cupressaceae). It is native to southern Mexico and Guatemala.
description
Juniperus comitana grows as an evergreen tree or large shrub that can reach heights of 10 to 12 meters. The species is usually single-stemmed and only branches several meters above the ground. The branches with straight or ascending branches form a rounded to broad pyramidal crown . The bark, which is up to 5 millimeters thick, is light ash brown in color and flakes off in long strips. The scaly bark of the branches is reddish brown in color.
There are two different leaf shapes . The light green, scale-like leaves are ovate and 1 to 2 millimeters long. The leaf margins are finely serrated and the tip is pointed. Both the tip and the edge are slightly paler in color. The leaf surface can be glandular. The needle-shaped leaves are 5 to 11 millimeters long and 0.8 to 1 millimeter wide and priem-shaped to linear-awl-shaped. All the leaves give off a very faint scent.
The bluish to blue-green berry cones are between 9 and 10 millimeters long and 5 to 8 millimeters thick. They have a sweet-tasting, resinous pulp and usually contain one, rarely two seeds.
The number of chromosomes is 2n = 22.
Distribution and location
The natural range of Juniperus comitana is in southern Mexico and Guatemala . In Mexico it includes the states of Chiapas and Hidalgo . In Guatemala, the species is found in the Baja Verapaz , Huehuetenango and Zacapa departments .
Juniperus comitana thrives at altitudes of 1200 to 2300 meters. The species is found mainly on dry, rocky slopes and canyons as well as in sparsely vegetated forest areas. There it grows mainly on soils that have formed on limestone or dolomite stone . In the forest areas in particular, there is a mixed stand formation with acacias ( Acacia ), figs ( Ficus ), pines ( Pinus ) and oaks ( Quercus ).
Systematics
It was first described as Juniperus comitana in 1944 by Maximino Martínez in Anales del Institutó de Biología de la Universidad Nacional Autonoma de México, Série Biologia , Volume 15, No. 1, pp. 12-15. The specific epithet comitana indicates the type locality about 12 kilometers south of Comitán de Domínguez .
Hazard and protection
Juniperus comitana is listed as "endangered" on the IUCN Red List . It is pointed out, however, that a new review of the hazard is necessary. One of the main reasons for endangerment is the heavy logging in their area of distribution.
swell
- Christopher J. Earle: Juniperus comitana. In: The Gymnosperm Database. www.conifers.org, December 12, 2010, accessed April 27, 2012 (English).
- Paul C. Standley, Julian A. Steyermark: Flora of Guatemala . Ed .: Chicago Natural History Museum. Volume 24, No. 1 , August 29, 1958, p. 33 (English, online [accessed April 27, 2012]).
Individual evidence
- ↑ a b c d e Christopher J. Earle: Juniperus comitana. In: The Gymnosperm Database. www.conifers.org, December 12, 2010, accessed April 27, 2012 (English).
- ^ A b c d Paul C. Standley, Julian A. Steyermark: Flora of Guatemala . Ed .: Chicago Natural History Museum. Volume 24, No. 1 , August 29, 1958, p. 33 (English, online [accessed April 27, 2012]).
- ↑ a b Juniperus comitana at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed August 9, 2016.
- ↑ Juniperus comitana in the endangered Red List species the IUCN 2011. Posted by: Conifer Specialist Group, 1998. Accessed April 27, 2012th