Quercus × alvordiana
| Quercus × alvordiana | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Species: | Q. × alvordiana |
| Binomial name | |
| Quercus × alvordiana Eastw. | |
| Synonyms | |
|
Quercus dumosa var. alvordiana | |
Quercus × alvordiana, the Alvord oak, is a hybrid oak in the genus Quercus. It has been reported to be a hybrid between Quercus douglasii and Quercus turbinella,[1] or between Q. douglasii and Quercus john-tuckeri,[2][3] which was formerly considered to be a variety of Q. turbinella.[4]
Distribution
This is the most common hybrid of Q. douglasii. It is endemic to California, where it occurs in the Southern Inner California Coast Ranges and western Transverse Ranges.[5]
Description
'Quercus × alvordiana is a shrub ot tree under 3 metres (9.8 ft) tall which may be evergreen or deciduous.
The leaves are up to 5 centimeters long, a dull blue to gray-green on top and paler green on the undersides. The leaf blades have toothed edges and some have pointed tips.
The acorn is narrow in shape and up to 4 centimeters long, with a cup up to 1.6 centimeters wide.[3]
Notes
- ↑ Quercus × alvordiana. U.S. Department of Agriculture. PLANTS.
- ↑ Fryer, J. L. 2007. Quercus douglasii. In: Fire Effects Information System. USDA FS, Rocky Mountain Research Station, Fire Sciences Laboratory.
- 1 2 Quercus × alvordiana. The Jepson Flora Project, Jepson eFlora. 2012.
- ↑ Quercus douglasii. Flora of North America.
- ↑ Hogan, C. M. 2008. Blue Oak, Quercus douglasii. Archived February 28, 2012, at the Wayback Machine. GlobalTwitcher.com, ed. N. Stromberg.