The term holly-leaved oak refers to a special type of oak tree characterized by its unique leaves that resemble those of a holly plant. This tree is also known as the evergreen oak, because the leaves stay on the tree all year round. Other synonyms for holly-leaved oak include the holm oak, the Mediterranean oak, and the ilex oak. The holm oak is found predominantly in the Mediterranean region, where it is a popular ornamental tree due to its attractive foliage and drought resistance. The ilex oak, as it is sometimes called, is also prized for its hard, durable wood, which is used for building furniture and other structures.