Zygophyllaceae is a family of flowering plants commonly known as the caltrop family. It includes about 25 genera and over 250 species, primarily found in arid and semi-arid regions around the world. Members of this family are typically characterized by their opposite leaves and often have fleshy, succulent stems or leaves, which help them conserve water. Many species in the Zygophyllaceae family are adapted to harsh environments and can be found in deserts and dry grasslands. Some notable genera include Tribulus, known for its spiny fruits, and Guaiacum, which produces the valuable lignum vitae wood. These plants play important roles in their ecosystems, providing food and habitat for various wildlife.