Quercus palmeri
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Q. palmeri
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| Quercus palmeri Engelm. 1880
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| File:Quercus palmeri range map 1.png | |
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Quercus palmeri is a species of oak known by the common name Palmer oak, or Palmer's oak. It is native to California, Baja California, New Mexico, and in Arizona through the transition zone to the eastern Mogollon Rim, where it grows in canyons, mountain slopes, washes, and other dry habitat types.[2][3][4]
Description
Quercus palmeri is a shrub or small tree growing up to 3 meters (10 feet) tall, but known to reach 6 meters (20 feet) at times. It branches into angular twigs and is reddish brown. The leaves are 1 to 3 centimeters (0.4-1.2 inches) in length. They are stiff, leathery, and brittle, their edges wavy with sharp spine-teeth. The upper surface is shiny, waxy, and olive green in color, the lower gray-green and coated with glandular hairs. The fruit is an acorn with a hairy cap up to 2.5 centimeters (1 inch) wide and a blunt-ended nut 2 to 3 centimeters (0.8-1.2 inches) long.[3]
Quercus palmeri usually grows in small populations, some of which are actually cloned growths of a single plant.[3] One such clone in the Jurupa Mountains in Riverside County, California, named the Jurupa Oak, was determined to be over 13,000 years old, a single individual living as a relict from the Pleistocene.[5] It is therefore one of the oldest living plants in the world.
References
- ↑ The Plant List, Quercus palmeri Engelm.
- ↑ Biota of North America Program 2014 county distribution map
- ↑ 3.0 3.1 3.2 Flora of North America, Quercus palmeri; RangeMap
- ↑ SEINet, Southwestern Biodiversity, Arizona chapter
- ↑ May, M. R., et al. (2009). Pleistocene clone of Quercus palmeri Engelm. PLoS ONE
External links
- Calflora Database: Quercus palmeri ( Palmer's oak)
- Jepson Manual eFlora treatment of Quercus palmeri
- United States Department of Agriculture Plants Profile for Quercus palmeri
- Quercus palmeri - Calphotos Photo gallery, University of California
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