| Barcode(s) | 00283982 | 
| Type Status | Holotype | 
| Collector | C. H. Muller & M. T. Muller | 
| Collector number | 1144 | 
| Country | Mexico | 
| State | Nuevo León | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Nuevo León | 
| Locality | Below Alamas on Hacienda Pablillo, Municipio de Galeana | 
| Date Collected | 1934-07-21 | 
| Verbatim Elevation | 1900 m. | 
| Habitat | Scattered along a watercourse | 
| Container | Plants of Mexico: State of Nuevo Leon | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c5e9acf5-9c1c-4ccb-a2a7-dba1ca61d67a | 
| Harvard University Herbaria Barcode | 00283982 | 
| Herbarium | A | 
| Type Status |  Holotype | 
| Holotype of |  Quercus polymorpha f. angustifolia C. H. Müller | 
| Verified by | Bartholomew, Bruce Monroe & Almeda, Frank | 
| Date Determined | 2023-01-** | 
| Determination Remarks |  [filed under] | 
| Annotation Text | = Quercus polymorpha Schltdl. & Cham. | 
| Taxon Reference | (for  Quercus polymorpha f. angustifolia C. H. Müller) J. Arnold Arbor. 1936. 17: 161. | 
| Determination |  Quercus polymorpha Schlechtendal & Chamisso | 
| Determined by | Bartholomew, Bruce Monroe & Almeda, Frank | 
| Date Determined | 2023-01-** | 
| Determination Remarks |  [current name] | 
| Determination |  Quercus polymorpha f. angustifolia C. H. Müller | 
| Determined by | Breedlove, Dennis Eugene | 
| Date Determined | 1994 | 
| Annotation Text | Holotype | 
| Determination |  Quercus polymorpha f. angustifolia C. H. Müller | 
| Determination Remarks |  [label name] | 
| Annotation Text | TYPE | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |