Genus Lithocarpus is a group of evergreen trees that belong to the beech family, Fagaceae. It is known for its distinctive leaves, which are tough and leathery and have teeth-like edges. The genus is found in Asia, particularly in the tropics and subtropics. Some synonyms for Genus Lithocarpus include Pasania, Lithocarpus sect.Willsia, and Trigonobalanus. Pasania is a former genus that has now been merged with Lithocarpus. Lithocarpus sect.Willsia is a sub-section of the genus Lithocarpus that contains a group of species with distinctive morphological features. Trigonobalanus is a closely related genus that was once considered a sub-genus of Lithocarpus.