Family Nyctaginaceae is a botanical family that consists of around 33 genera and 400 species. This family is also known by several other synonyms like the nightshade family, the four-o'clock family, and the Marvel of Peru family. The name 'four-o'clock family' comes from the fact that most of the species in this family bloom in the late afternoon or early evening. The genus Bougainvillea is a member of this family and is famous for its attractive and colorful flowers. Some other well-known members of this family include the desert willow, the soapberry tree, and the moonflower. Family Nyctaginaceae is an economically important family as many species are used for medicinal purposes, ornamental plants, and as a source of food.