[Wikipedia] North & South America native, Description: Cenchrus echinatus is a species of grass known by the common names southern sandbur,[1] spiny sandbur,[2] southern sandspur, and in Australia, Mossman River grass.[3][4] It is native to North and South America. It is a clump-forming annual grass growing up to 80 cm (31 in) tall. The leaves occur with or without hairs and measure up to 12 mm (0.47 in) wide. The ligule is a fringe of hairs. The grass has barbed burrs of 4?10 mm (0.16?0.39 in) long. In Australia it forms an invasive weed in coastal situations. (contributed by Mary Ann Machi)

[Cal-IPC] Invasive Watch List: Cenchrus echinatus (southern sandbur) is an annual grass (family Poaceae) that can grow up to 30 inches tall and is found in the San Francisco Bay area and the south coast and desert ranges of California. It is native to the southern United States, Mexico, Central America and South America. It favors grasslands and dunes. It spreads via seeds which can attach to clothing or animals and can be carried by wind or water. Cal-IPC Rating: Watch (contributed by Mary Ann Machi)