Quercus graciliformis

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]

Quercus graciliformis
Scientific classification
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
  • Quercus canbyi Cory & Parks

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
  1. Beckman, E. (2017). "Quercus graciliformis". IUCN Red List of Threatened Species. 2017: e.T30954A63729730. doi:10.2305/IUCN.UK.2017-2.RLTS.T30954A63729730.en.
  2. "Quercus graciliformis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 30 July 2015.
  3. 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.
  4. Texas A&M University
  5. 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.
  6. "Quercus graciliformis". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.


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