Quercus agrifolia var. oxyadenia (Torr.) J.T.Howell

Basionym: Q. oxyadenia Torr. (1853). Accepted as Quercus agrifolia varietas oxyadenia by the World Checklist and Bibliography of Fagales (1998) but not recognised as distinct by Valencia-A (2004).

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  Image from a plant at Rancho Santa Ana Botanic Garden (USA), 2011.  Image Jan De Langhe  © Jan De Langhe - Arboretum Wespelaar

• Valencia-Avalos, S. (2004), Diversidad del Género Quercus (Fagaceae) en México. Boletin de la Sociedad Botanica de México 75: 33-53.
• Hauser, D.A., Keuter, A., McVay, J.D., Hipp, A.L. and Manos, P.S. (2017), The evolution and diversification of the red oaks of the California Floristic Province (Quercus section Lobatae, series Agrifoliae). American Journal of Botany, 104: 1581-1595. https://doi.org/10.3732/ajb.1700291

• Manos, P. S., & Hipp, A. L.(2021) , An Updated Infrageneric Classification of the North American Oaks (Quercus Subgenus Quercus): Review of the Contribution of Phylogenomic Data to Biogeography and Species Diversity. Forests, 12(6), 786. https://doi.org/10.3390/f12060786