-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Monocots (Class Liliopsida)​

-Grasses, Sedges, Cattails, and Allies (Order Poales)

-​Grasses (Family Poaceae)

-Bristlegrasses, Bluestems, Paspalums, and Allies (Subfamily Panicoideae)

-Bristlegrasses, Rosette Grasses, Barnyard Grasses, and Allies (Tribe Paniceae)

-Subtribe Cenchrinae

-Sandburs (Genus Cenchrus)

-Southern Sandbur (Cenchrus echinatus)

Cenchrus echinatus (southern sandbur) is an annual grass (family Poaceae) that can grow up to 30 inches tall. While it does have some medicinal uses and can serve as forage for grazing animals, it is predominantly recognized as an unwelcome weed in pastures, lawns, and disturbed areas.