Triphasia grandifolia or unifoliate limeberry[1] is a species of the genus Triphasia which is closely related to the genus Citrus and according to some should be including in it. Triphasia is unique with its small red skinned edible fruit, which is about the size of a Greengage.
Grandifolia is named so because of its single large leaves, and was discovered in the Philippines by the abbreviation author Elmer Drew Merrill. This discovery broadened our knowledge on the genus Triphasia.[2]