A cherry blossom is a flower of many trees of genus Prunus. The most well-known species is the Japanese cherry, Prunus serrulata, which is commonly called sakura (桜 or 櫻; さくら). They are widely distributed to Japan, Taiwan, Korea, Mainland China, Nepal, India, Pakistan, Afghanistan, Iran, Myanmar, Thailand, Europe, United States, Canada, and West Siberia. It is considered the national flower of Japan. All varieties of cherry blossom trees produce small, unpalatable fruit or edible cherries. Edible cherries generally come from cultivars of the related species Prunus avium and Prunus cerasus.