What is "hyuganatsu"

Hyuganatsu (Citrus tamurana, Japanese: 日向夏) is a citrus fruit and plant grown in Japan. The name comes from Hyūga, the ancient name of Miyazaki Prefecture in Kyushu, where the citrus is said to have originated, while means summer. Hyūganatsu grown outside Kyushu are sometimes shipped under different names such as , , or .