Quercus graciliformis
| Quercus graciliformis | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Subgenus: | Quercus subg. Quercus |
| Section: | Quercus sect. Lobatae |
| Species: | Q. graciliformis
|
| Binomial name | |
| Quercus graciliformis | |
| |
| Natural range of Quercus graciliformis | |
| Synonyms | |
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Quercus graciliformis (also known as the Chisos oak or slender oak) is a rare North American species of oak tree in the beech family.[2]
Description[]
Quercus graciliformis is a deciduous tree up to 8 metres (26 ft) tall. Leaves are elliptical or lance-shaped with 8-10 shallow lobes.[3] The acorns are produced biennially.
Distribution[]
The species has been found only in the Chisos Mountains, within Big Bend National Park of West Texas, and a few miles southeast into the state of Coahuila in northeast Mexico.[4] It is threatened by habitat loss.[5][6]
It grows on dry, rocky canyon floors at elevations above 5,000 feet (1,500 m).[3]
References[]
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Wikimedia Commons has media related to Quercus canbyi. |
- ^ Beckman, E. (2017). "Quercus graciliformis". IUCN Red List of Threatened Species. 2017: e.T30954A63729730. doi:10.2305/IUCN.UK.2017-2.RLTS.T30954A63729730.en.
- ^ "Quercus graciliformis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 30 July 2015.
- ^ Jump up to: a b Nixon, Kevin C. (1997). "Quercus graciliformis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 3. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ Texas A&M University
- ^ Nixon, K. et al. 1998. Quercus graciliformis Archived June 27, 2014, at the Wayback Machine. 2006 IUCN Red List of Threatened Species. Archived June 27, 2014, at the Wayback Machine Downloaded on 23 August 2007.
- ^ "Quercus graciliformis". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
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Categories:
- IUCN Red List critically endangered species
- Quercus
- Endemic flora of Texas
- Flora of Coahuila
- Flora of the U.S. Rio Grande Valleys
- Big Bend National Park
- Plants described in 1934
- Critically endangered flora of North America
- Critically endangered biota of Mexico
- Critically endangered flora of the United States
- Quercus stubs