Quercus delgadoana. The acorn and leaf are not on same scale.
Quercus delgadoana S. Valencia, Nixon & L.M. Kelly (2011)
Subgenus Quercus, section Lobatae (The red Oaks)
The plant grown under the name Quercus aff. eugeniifolia has now been described as a new species (Novon June 2011)
MEXICO: (Hidalgo, Puebla, Veracruz)
Oak ICRA Checklist