Any of various evergreen shrubs of the genusMahonia, especially M. aquifolium of northwest North America, having compound leaves with spiny-toothed leaflets and black berries with blue bloom. 脉叶十大功劳:一种十大功劳属常绿灌木 ,尤指 冬青叶十大功劳, 分布于北美洲的西北部,有带细锯齿单叶的复叶和开有蓝花的黑色果实