"Genus Payena" refers to a group of evergreen trees endemic to Southeast Asia, commonly known as the Payena trees. These trees are known for their medicinal properties and are also used in the timber industry. Although the name Payena is widely used to refer to this genus, there are also other synonyms that have been used over the years. These include the genus name Irvingodendron and the species names Garcinia cochinchinensis and Garcinia echinocarpa. These synonyms are still occasionally used in scientific literature and it is important to be aware of them when conducting research on these trees.