Juniperus ashei
Juniperus ashei | |
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J. ashei shedding pollen: mature male on right, immature tree on left, mature green females in background | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Gymnospermae |
Division: | Pinophyta |
Class: | Pinopsida |
Order: | Cupressales
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Family: | Cupressaceae |
Genus: | Juniperus |
Species: | J. ashei
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Binomial name | |
Juniperus ashei J. Buchholz
| |
Natural range of Juniperus ashei | |
Synonyms | |
J. sabinoides (H.B.K.) Nees sensu Sargent |
Juniperus ashei (Ashe juniper, mountain cedar, blueberry juniper, post cedar, or just cedar) is a drought-tolerant evergreen tree, native from northeastern Mexico and the south-central United States to southern Missouri. The largest areas are in central Texas, where extensive stands occur. Ashe juniper grows up to 10 metres (33 feet) tall, and over time can reach 15 m (49 ft), and provides erosion control and year-round shade for wildlife and livestock.
Description
The feathery foliage grows in dense sprays, bright green in color. The leaves are scale-like, 2 to 5 millimetres (1⁄16 to 3⁄16 inch) long, and produced on rounded (not flattened) shoots. It is a
Scientific name
The specific name ashei pays homage to American forester and botanist William Willard Ashe.[3]
As an invasive species
Despite being native to Texas, ashe juniper is often considered an invasive species and weed by many landowners and ranchers. It is commonly believed that they use more water than live oaks, but more recent research suggests the reverse.[4][5][6][7][8]
Ashe juniper thrives on ranches, as cattle avoid the bitter-tasting seedlings. In contrast to the redberry juniper, ashe juniper does not resprout when cut.[9]
Allergens
Ashe juniper pollen, along with that of the related
Uses
Spanish explorers who arrived in what is now
The wood is naturally rot-resistant and provides raw material for fence posts. Posts cut from old-growth Ashe junipers have been known to last in the ground for more than 50 years. Over 100 years ago, most old-growth Ashe junipers were cut and used not only for fence posts, but also for foundation piers, telegraph and telephone poles, roof framing, and railroad ties.[10][11][12][13]
The berry-like cones are eaten by a number of wildlife.[14][15] The endangered golden-cheeked warbler uses the shredding bark of older Mountain Cedars to build its nests and old-growth cedar brakes and juniper-oak woodlands as habitat.
References
- . Retrieved 13 November 2021.
- ^ United States Forest Service
- ISSN 0013-6220.
- ^ Fannin, Blair, 2008. “Research Could Change Perception of Woody Species Use of Water in Edwards Plateau,” AgriLife Today online. July 30.
- ^ Hauwert, Nico M. and Jack M. Sharp, 2014. “Measuring Autogenic Recharge over a Karst Aquifer Utilizing Eddy Covariance Evapotranspiration,” Journal of Water Resource and Protection. Volume 6:869-879.
- ^ Gregory, Lucas Frank, 2006. Water Budgets and Cave Recharge on Juniper Rangelands in the Edwards Plateau. Texas A&M University Thesis.
- ^ Owens, Keith M., Robert K. Lyons, and Chris L. Alejandro. 2006. “Rainfall Partitioning within Semiarid Juniper Communities: Effects of Event Size and Canopy Cover,” Hydrological Processes. Volume 20: 3179-3189.
- ^ Schwinning, Susanne, 2008. “The Water Relations of Two Evergreen Tree Species in a Karst Savanna,” Oecologia. Volume 158: 373-383.
- ^ McGinty, Allan (18 March 1997). "JUNIPER ECOLOGY". unidentified. Archived from the original on 16 April 2009. Retrieved 2009-01-10.
- ^ Bray, William L., 1904. Forest Resources of Texas, U.S. Department of Agriculture, Bureau of Forestry, Bulletin No. 47. Government Printing Office: Washington D.C.
- ^ Roemer, Dr. Ferdinand, 1983. Roemer’s Texas 1845 to 1847. German-Texas Heritage Society. Eakin Press: Austin.
- ^ Brown, Frank, 1875. Annals of Travis County and of the City of Austin: From the Earliest Time to the Close of 1875, Vol. 6. Austin History Center.
- ^ Austin Daily Democratic Statesman, September 10, 1874.
- ISBN 0-394-50760-6.
- ^ Chavez-Ramirez, Felipe, 1992. The Role of Birds and Mammals in the Dispersal Ecology of Ashe Juniper in the Edwards Plateau. Texas, A&M University Thesis.
- Farjon, A. (2020). "Juniperus ashei". . Retrieved 13 November 2021.
External links
Media related to Juniperus ashei at Wikimedia Commons
- Image Archive of Central Texas Plants detailed photographs
- Photographs of large Ashe Junipers (also called Mountain Cedars)
- Dimensions of Texas Champion Ashe juniper
- Evaluation of the Effects of Ashe Juniper (Cedar) Control on Water Quantity, Water Quality, and Suspended-Sediment Loads in three watersheds on the Edwards Aquifer Recharge and Catchment Area, South-Central Texas