Ziziphus in the context of "Jujube"

Jujube (UK /ˈdʒuːdʒuːb/; US /ˈdʒudʒub/ or /ˈdʒudʒəbiː/), sometimes jujuba, scientific name Ziziphus jujuba, and also called red date, Chinese date, and Chinese jujube, is a species in the genus Ziziphus in the buckthorn family Rhamnaceae. It is often confused with the closely related Indian jujube, Z. mauritiana. The Chinese jujube tolerates a diverse range of climates, from temperate to tropical. Its origin is thought to be in southwest Asia, but it has been widely dispersed through cultivation, and is today cultivated in gardens as a shrub as well as in agriculture as a food crop. They are eaten freshly harvested as well as dried and candied.