Quercus × macdonaldii
| Quercus × macdonaldii (Quercus macdonaldii) | |
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| Leaves of Quercus ×macdonaldii from an individual on Santa Cruz Island, California | |
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| Species: | Q. × macdonaldii
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| Binomial name | |
| Quercus × macdonaldii Greene & Kellogg (pro sp.) [1]
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Quercus macdonaldii − Greene | |
on the California Channel Islands.
Quercus × macdonaldii,[1][2][3] formerly Quercus macdonaldii, with the common names MacDonald's oak and Macdonald oak, is a rare species of oak in the Fagaceae family.[1]
Distribution
The tree is endemic to the California Channel Islands, on Santa Cruz Island, Santa Rosa Island, and Santa Catalina Island, in Southern California.[2] It is found in chaparral and woodlands habitats in canyons and slopes below 600 metres (2,000 ft).[2]
Quercus × macdonaldii is a Vulnerable species, threatened by habitat loss.[4]
Taxonomy
The plant was reclassified as Quercus × macdonaldii, a naturally occurring hybrid of Quercus pacifica and Quercus lobata, or possibly other oak species.[1][2][3][5]
See also
- California chaparral and woodlands ecoregion
References
- ^ a b c d ITIS Standard Report Page: Quercus X macdonaldii . accessed 2.28.2015
- ^ a b c d Jepson: Quercus × macdonaldii . accessed 2.28.2015
- ^ a b USDA: Quercus × macdonaldii . accessed 2.28.2015
- ^ IUCN Red List: Quercus macdonaldii; Nixon, K. et al. 1998.
- ^ Kevin, Nixon (2002). "The oak (Quercus) biodiversity of California and adjacent regions" (PDF). Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California's Challenging Landscape.
External links
- Jepson eFlora treatment of Quercus × macdonaldii
- USDA Plants Profile for Quercus × macdonaldii [berberidifolia × lobata] (MacDonald oak)
- Calflora Database: Quercus × macdonaldii (MacDonald's oak, MacDonald oak)
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- IUCN Red List vulnerable species
- Quercus
- Endemic flora of California
- Natural history of the Channel Islands of California
- Natural history of the California chaparral and woodlands
- Natural history of Los Angeles County, California
- Trees of the Southwestern United States
- Hybrid plants
- Vulnerable flora of California
- Fagales stubs