Citrus wintersii is a species of citrus that is commonly known as the Satsuma mandarin. This fruit is popular for its sweet and juicy taste, as well as its easy-to-peel skin. There are many synonyms for Citrus wintersii, including Citrus unshiu, Citrus nobilis, and Citrus reticulata. These synonyms are often used interchangeably, depending on the geographic location and language. In Japanese, the Satsuma mandarin is called mikan, while in China it is known as mandarin or tangerine. Regardless of what name it goes by, this citrus fruit offers many health benefits, including high levels of vitamin C, fiber, and antioxidants.