Baccharis dioica is a North American species of shrubs in the family Asteraceae known by the common name broombush falsewillow.Flora of North America, Broombush falsewillow, Baccharis dioica Vahl, Symb. Bot. 3: 98. 1794. It is native to Florida, the Yucatán Peninsula, and the West Indies (Bahamas, Greater Antilles, Virgin Islands, Montserrat).Tropicos, Baccharis dioica Vahl Carnevali, G., J. L. Tapia-Muñoz, R. Duno de Stefano & I. M. Ramírez Morillo. 2010. Flora Ilustrada de la Peninsula Yucatán: Listado Florístico 1–326.Wunderlin, R. P. 1998. Guide to the Vascular Plants of Florida i–x, 1–806. University Press of Florida, Gainesville.

Baccharis dioica is a shrub sometimes as much as 300 cm (10 feet) tall. It grows in hammocks, on dunes, and in mangrove swamps.

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