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Quercus graciliformis (also known as the Chisos oak or slender oak) is a rare North American species of oak tree.[2]

Quercus graciliformis
Conservation status

Critically Endangered  (IUCN 3.1)[1]
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 feet) tall. The 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.[1][5]

It grows on dry, rocky canyon floors at elevations above 1,500 m (5,000 ft).[3]


References


Wikimedia Commons has media related to Quercus canbyi.
  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. Retrieved 16 November 2021.
  2. USDA, NRCS (n.d.). "Quercus graciliformis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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). Vol. 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. "Quercus graciliformis". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.


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