Cenchrus tribuloides is a type of grass that is commonly found in the southern United States. Other names for this plant include sandburs, burgrass, and sticker weeds. Sandspur and prickly grass are also sometimes used as synonyms for Cenchrus tribuloides. The defining characteristic of this plant is its prickly seed heads, which can cause irritation and pain if stepped on or brushed against. Despite their thorny nature, Cenchrus tribuloides can be a valuable resource for livestock grazers, providing high-quality forage in the summer months. No matter what you call them, these tough grasses are a crucial part of many ecosystems in the southern U.S.