Acalypha deamii is a slender, herbaceous annual native to moist bottomland forests and floodplains of the central-eastern U.S. It's characterized by alternate, ovate to rhombic, serrated leaves and inconspicuous, monoecious flowers. Its two-seeded capsule contains notably larger seeds (2.2-3.2 mm), which distinguishes it from the more common Acalypha rhomboidea that typically produces three smaller seeds.