Antiaris

a genus of plants of the Moraceae family. They are monoecious trees or shrubs. The flowers are plain; the male flowers grow in globular racemes, and the female flowers are single. There are five or six species in the tropics of Asia, Africa, and Madagascar. In Russian literature the name anchar, or upas tree, refers to A. toxicaria, a tall tree of the Asian tropics. Its highly toxic juice, which has long been used to poison arrows, contains the glycosides antiarin and antiosidin.