Baccharis dioica is a North American species of shrubs in the aster family known by the common name Broombush falsewillow. It is native to Florida, the Yucatán Peninsula, and the West Indies (Bahamas, Greater Antilles, Virgin Islands, Montserrat). Baccharis dioica is a shrub sometimes as much as 300 cm (10 feet) tall. It grows in hammocks, on dunes, and in mangrove swamps.