"Oku-choji-zakura" ( Prunus apetata ssp. pilosa) belongs to the Rosaceae (the Rose family). It is a small deciduous tree that is distributed to Honshu, from Tohoku district south to the Japan Sea Side of Hokuriku district. It is a variety of "Choji-zakura" (Prunus apetata), mainly distributed to the Pacific Sea Side. This tree grows in low mountain zone to mountain zone, and can reach 3-5 m in height. The leaves are obobate-elliptic, toothed with caudate apexes. There are many hairs on the leaf surface and the veins on the back of the leaves. This tree blooms white or pale red flowers from March to April. The fruit ripens black in the summer, but it can be eaten sweet and sour. The Japanese name is derived from the shape of a long calytron in the form of "T".