Cenchrus echinatus

Cenchrus echinatus is a species of grass known by the common names southern sandbur, spiny sandbur, southern sandspur, and in Australia, Mossman River grass. It is native to North and South America. It is a clump-forming annual grass growing up to 80 cm tall. The leaves occur with or without hairs and measure up to 12 mm wide. The ligule is a fringe of hairs. The grass has barbed burrs of 4 - 10 mm long.

In Australia it forms an invasive weed in coastal situations.

Ecology
The species is invasive in New Caledonia, Tahiti, and Rarotonga.