Vitex. Chaste Tree . Chasteberry . Chasteberry Tree . Chastetree . Vitex rotundifolia . Chaste Trees . Chasteberries . Chasteberry Trees . Chastetrees . Tree, Chaste . Tree, Chasteberry . Trees, Chaste . Trees, Chasteberry . Vitex agnus castus . Vitex agnus-castus . Agnus castus vulgaris . Chastity Tree . Monk's Pepper . Chastily Tree . A genus of trees in the Lamiaceae family containing assorted flavonoids with possible analgesic and antineoplastic properties. The fruit of these trees is used in herbal preparations. . 1.00