Cenchrus echinatus L.

Natural range: Widespread in warm areas; in the U.S. from California across the southern states, including Florida

Habitat: Weedy

Florida status: Native, common

Recognition: Sandspur with the spines on the burr in two whorls, the spines of the basal whorl terete and those of the the upper whorl (may be perceived as multiple whorls) flattened (as illustrated below)