Virola (Virola spp.) is a native plant of the Amazon region of South America. The virola group, related to the nutmeg family, contains more than 60 different plant species. A number of virola plants are known for their hallucinogenic qualities, writes Paul M. Gahlinger in "Illegal Drugs." Virola plants have distinct shoots and flowers.
Virola flowers are golden to brown in color and bloom singly or in clusters. The flowers have a pungent odor.
The plants in the virola group have vertical shoots and branches. The foliage grows on the sides of horizontal twigs. New leaves have velvety undersides.
The red resin obtained from the inner bark of a number of species of virola trees is used for making a hallucinogenic snuff referred to as epena. The snuff is used extensively by the males in a number of western Amazon native tribes and is thought to allow the user to communicate with the spirit world, writes Christina Pratt in "An Encyclopedia of Shamanism, Volume 1."