chaste tree

chaste-tree的词性：
n.（名词）

1. Any of several shrubs or trees of the genus Vitex, especially two cultivated Old World species (V. agnus-castus and V. negundo), having aromatic, palmately compound leaves and clusters of usually lilac flowers.
淡紫花牡荆：几种牡荆属 的灌木或乔木，尤指两种东半球的栽培品 （白羊牡荆 和 黄荆） ，长有芳香的、掌状的复叶及通常为淡紫色的花簇