The Convexa Japanese holly (Ilex crenata cv. Convexa) belongs to Aquifoliaceae (the Holly family). It is a small evergreen tree that is a cultivar of "Japanese holly"; distributed from west of Honshu in Japan to Shikoku, Kyushu and the southern part of the Korean Peninsula. The height is 1.5-2 meters. The leaves are small, ovate, lustrous green, leathery and thick, with a curled back. It blooms four white petals from early summer to summer. After the flower, green fruits are formed and ripen black in fall. It is a material for topiaries that are trimmed into branches to create geometric shapes and animal shapes.