{{Short description|Species of oak tree}} {{speciesbox | image = Quercus polymorpha kz4.jpg | image2 = Quercus polymorpha kz2.jpg | status = LC | status_system = IUCN3.1 | status_ref = <ref name=iucn>{{cite iucn |author=Jerome, D. |date=2017 |title=''Quercus polymorpha'' |volume=2017 |article-number=e.T194221A2304665 |doi=10.2305/IUCN.UK.2017-2.RLTS.T194221A2304665.en |access-date=28 September 2022}}</ref> | genus = Quercus | display_parents = 2 | parent = Quercus sect. Quercus | species = polymorpha | authority = Schlecht. & Cham. | synonyms_ref = <ref>{{ThePlantList |id=kew-174496 |taxon=Quercus polymorpha |authority=Schltdl. & Cham.}}</ref> | synonyms = * ''Quercus germana'' var. ''lemmonii'' <small>Trel.</small> * ''Quercus guatimalensis'' <small>A.DC.</small> * ''Quercus petiolaris'' <small>Benth.</small> * ''Quercus polymorpha'' f. ''angustifolia'' <small>C.H.Mull.</small> * ''Quercus turbinata'' <small>Liebm.</small> * ''Quercus varians'' <small>M.Martens & Galeotti</small> }}
'''''Quercus polymorpha''''', the '''Mexican white oak''', '''Monterrey oak''' or '''netleaf white oak''', is a North American species of oak. It is widespread in Mexico, Guatemala, and Honduras, and known from a single population in the United States (about {{Convert|30|km|abbr=off|disp=or}} north of the Río Grande in Val Verde County, Texas) but widely planted as an ornamental.<ref name=w/><ref>{{BONAP |genus=Quercus |species=polymorpha |date=2014}}</ref><ref>Muller, C. H. 1942. The Central American species of ''Quercus''. United States Department of Agriculture. Bureau of Plant Industry. Miscellaneous Publication 477: 1–216</ref><ref>Breedlove, D.E. 1986. Flora de Chiapas. Listados Florísticos de México 4: i–v, 1–246.</ref><ref>[http://texastreeid.tamu.edu/content/TreeDetails/?id=105&t=O Texas A&M Forest Service, Trees of Texas]</ref>
==Description== ''Quercus polymorpha'' is a subevergreen tree up to 20 meters (67 feet) tall. The bark is gray or brown. The leaves are elliptical or egg-shaped, up to 15 centimetres (6 inches) long, unlobed or with a few shallow rounded lobes.<ref name=w>{{eFloras|1|233501074|Quercus polymorpha |family=Fagaceae |first=Kevin C. |last=Nixon}}</ref>
==Range and habitat== ''Quercus polymorpha'' ranges across eastern and southern Mexico, in the Sierra Madre Oriental and Sierra Madre de Oaxaca ranges, the Chiapas Highlands of southeastern Mexico, and scattered locations on the Mexican Plateau, Trans-Mexican Volcanic Belt, and Sierra Madre Occidental. It is found in the states of Nuevo León, Tamaulipas, San Luis Potosí, Querétaro, Hidalgo, Veracruz, Puebla, Oaxaca, Chiapas, Coahuila, Guanajuato, Jalisco, Sinaloa, Michoacán, and Morelos. There is a single population in Val Verde County of southern Texas. There are scattered populations in the Guatemalan Highlands of central Guatemala, including Chiquimula, Huehuetenango, Jalapa, and Zacapa, and in western Honduras.<ref name = iucn/>
The species grows in a variety of habitats, including deep canyons in the Sierra Madre Oriental, riparian gallery forests, the margins of thorn scrub forest, tropical dry forests, the lower margins of montane oak–pine forests, and cloud forests. It is found from 400 to 2,100 meters elevation.<ref name = iucn/>
==References== {{Reflist}}
==External links== {{commons cat}} * [http://www.tropicos.org/Image/100015419 photo of herbarium specimen collected in Nuevo León in 1991] * [http://www.nature-education.org/plant-mex-oak.html Beat Springs Blossom, Nature Education] includes photos * {{NPIN|QUPO2 |link=1}}: includes photos
{{Taxonbar|from=Q4112232}}
polymorpha Category:Flora of Texas Category:Oaks of Mexico Category:Trees of Central America Category:Plants described in 1830 Category:Flora of the Central American pine–oak forests Category:Flora of the Sierra Madre Oriental Category:Flora of the Sierra Madre de Oaxaca Category:Cloud forest flora of Mexico Category:Flora of the Chiapas Highlands