描述
Ziziphus jujuba (from Greek ζίζυφον, zízyphon), commonly called jujube (sometimes jujuba), red date, Chinese date, Korean date, or Indian date is a species of Ziziphus in the buckthorn family (Rhamnaceae), used primarily as a shade tree that also bears fruit.
The fruit is an edible oval drupe 1.5-3 centimetres (0.59-1.18 in) deep; when immature it is smooth-green, with the consistency and taste of an apple, maturing brown to purplish-black and eventually wrinkled, looking like a small date. There is a single hard stone similar to an olive stone.