Hybrids between the two native oaks are not rare but probably account for only about 10% of all trees. They are intermediate in characters between the two parent species.
All names: Quercus petraea x robur (Q. x rosacea) Bechst.; Quercus x rosacea Bechst.; Quercus petraea x robur; Quercus intermedia Boenn. ex Reichb.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database