Cenchrus is a genus of grasses commonly known as sandburs. These plants are typically found in warm, dry regions and are characterized by their spiky seed heads, which can cling to clothing and fur. Cenchrus species are often used for erosion control and as forage for livestock. There are over 100 species within the Cenchrus genus, with some notable examples including Cenchrus spinifex and Cenchrus longispinus. These grasses thrive in sandy soils and are adapted to withstand drought conditions, making them important for maintaining soil health in their native habitats.