Barberry n. : A shrub of the genus Berberis, common along roadsides and in neglected fields. B. vulgaris is the species best known; its oblong red berries are made into a preserve or sauce, and have been deemed efficacious in fluxes and fevers. The bark dyes a fine yellow, esp. the bark of the root.

Example:
Can a Barberry bush be divided into two Barberry bushes at the root?

Taxonomy
Berberis, species, shoots, Iran, zereshk polo, flowers, Berberis thunbergii, the leaves, fruit, berries, Berberis gagnepainii, free encyclopedia, plant, thorn, cultivation, 2007-05-02, European barberry, Berberis darwinii.

Defination from the web:
barberry) is the alternate host species of the wheat rust Puccinia graminis, a serious fungal disease of wheat. ... Barberry cultivation in Iran is concentrated in the South Khorasan province, especially around Birjand and Qaen. About 85% of production is ...