Quercus × bimundorum
Quercus × bimundorum, known as two worlds oak, is a naturally occurring hybrid of white oak, Quercus alba, and pedunculate oak, Quercus robur. It occurs sporadically where they come in contact in the United States. Its parents are both placed in Quercus sect. Quercus.
A tree reaching 12m, there are commercial cultivars available, including 'Crimschmidt', trade designation, with a columnar growth form, and 'Midwest', trade designation, with a pyramidal growth form.