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The Wu shi (Diospyros cathayensis) belongs to Ebenaceae (the Ebony family). It is a tall evergreen tree that is native to central-south China. This tree grows in forests in ravines at an altitude of 600-1500 m, and can reach about 10 m in height. It is sometimes cultivated. The leaves are elliptic, thinly leathery, and dark green. The white to pale yellow flowers with 4 calyx lobes bloom April and May. The fruits are orange, globose to ovoid, and ripen from August to October. The fleshes of fruits are sweet and edible. In Chinese, it is called "烏柿" (wu shi).
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