Citrus unshiu is a seedless and easy-peeling citrus species, also known as cold hardy mandarin, satsuma mandarin, satsuma orange, Christmas orange, and tangerine. It is probably of Japanese origin and introduced elsewhere. One of the English names for the fruit, 'satsuma', is derived from the former Satsuma Province in Japan, from which these fruits were first exported to the West (in Japanese, it is known as a mikan). The Afrikaans name naartjie is also used in English. It derives originally from the Tamil word nartei meaning citrus. The word has been used in South Africa since 1790, but the first written recorded English use is by Lawrence Green in the Tavern of the Seas, 1947. The 'tjie' on the end of naart, indicates a diminutive.