Nov. Gen. Sp. Pl.3: 21. 1841
Phenology: Flowering and fruiting summer–fall.
Habitat: Disturbed areas.
Elevation: 10–50 m.
Acalypha arvensis became established in the United States in the 1980s and is now known from scattered localities throughout peninsular Florida. Some recent literature misapplies A. aristata Kunth to this species, but that name is a synonym of A. alopecuroidea.