Cenchrus tribuloides L.
Sand Dune Sandspur
Natural range: Coastal Maine (Canada?) to Louisiana, adventive elsewhere
Natural habitat: Comparatively low moist areas in sand dunes
Florida status: Native, coastal
Recognition: By far the largest burrs of any Cenchrus in our area. Racemes > 2 cm diam. Spikelet 1(2), 8-9 mm long.