Genus Cestrum is a group of woody shrubs in the nightshade family that are native to the Americas. The common name for this genus is "Jasmine Nightshade", due to the fragrant flowers that resemble those of true jasmine. Other synonyms for this genus include "Green Poisonberry" and "Inkberry", due to the poisonous berries that the plants produce. In traditional medicine, Cestrum species have been used to treat a variety of conditions including fever, pneumonia, and rheumatism. Despite their medicinal properties, some Cestrum species are considered invasive and have become a problem in certain areas. Overall, the genus Cestrum is an interesting and diverse group of plants that have both positive and negative impacts.