What is the name of this variety of citrus fruit (see photo)?

Citrus medica or the fingered citron is called Buddha's hand in Chinese. The fruit may be given as a religious offering in Buddhist temples. According to tradition, Buddha prefers the "fingers" of the fruit to be in a position where they resemble a closed rather than open hand, as closed hands symbolize to Buddha the act of prayer. In China, the Buddha’s hand fruit is a symbol of happiness, longevity and good fortune. It is also a traditional temple offering and a New Year’s gift