A Grammatical Dictionary of Botanical Latin

Ziziphum,-i (s.n.II), abl. sg. ziziphi: the jujube [> Gk. zizyphon); ziziphus,-i (s.f.II): the jujube-tree: note that these are Latin words derived from the Greek and that the word for the tree is feminine in gender although in the second declension.]

The jujube, medieval Latin jujuba,-ae (s.f.I), an edible drupaceous fruit of a tree of the genus Ziziphus (s.f.II) (Rhamnaceae); the Chinese Date; a tree of the genus Ziziphus (also a fruit-flavored gumdrop or lozenge). Note the genus is a feminine noun: Z. mucronata; Z. mauritiana (synonym Z. Jujuba Lam.); Z. mexicana; Z. nummularia; but Zizyphus xylocarpus Willd., which is a large shrub or small tree. The fruits of Zizyphus Jujuba Mill. non Lam., the Common Jujub, of China, Iran, etc. with thin dark skin and whitish, mealy sweet flesh eaten fresh or dried like dates or boiled with grains, etc., source of Pate de Jujubes in the manufacture of "pectoral lozenges" (p. 563 Uphof, 1968, Dictionary of Economic Plants).

Ampelozizyphus guaquirensis W. Meier & P. E. Berry.