Identificaciones de brdnrd10

Leaves had a mostly dusty texture, especially the underside, and visibly became clearer once touched with hands. Growing in the midst of mostly cultivated and escaped exotics right off Hillcrest Drive.

Based on the leaf shape and slightly scrubby growth habit, this probably has some scrub oak genes in it, but it was more arborescent and taller than the scrub oaks in the area.

It has enough Q. engelmannii traits that I'd comfortably ID this as Q. engelmannii. But I can maybe see an argument for this being Q. x ewanii or Q. engelmannii x berberidifolia. Thoughts?

Rare species which finally appeared in this hotspot after months of constant searching! Completely quiet, it was located in a huge oak tree near a resting area and some bathrooms.
See eBird checklist for more information: https://ebird.org/checklist/S156257001

¡Especie rara que finalmente apareció en este hotspot después de meses de búsqueda constante! Completamente callado, estaba localizado en un encino enorme junto a un área de descanso y algunos baños.
Ver listado de eBird para más información: https://ebird.org/checklist/S156257001