the family Rhamnaceae, the buckthorn family, / Hippophae (family Elaeagnaceae), the sea buckthorn.

plural of buckthorn

Any deciduous shrub of the genus Hippophae.

plural of alder buckthorn

A deciduous shrub, Frangula alnus, native to Europe and neighboring areas of Asia and Africa, bearing glossy leaves, flowers in sessile umbels, and inedible red berries that turn black when ripe, and historically used as a laxative and to produce dyes.

Alternative form of sea buckthorn

plural of sea buckthorn

plural of sea-buckthorn

A species of buckthorn, Rhamnus saxatilis, that produces a yellow dye.