Argythamnia is a genus of flowering plants of the family Euphorbiaceae. They are known commonly as silverbushes. The genus includes 66 species native to the Americas, ranging from the southwestern and south-central United States through Mexico, Central America, the Caribbean, and South America to southern Argentina.
The genus was described by Patrick Browne in 1756.Browne, Patrick. 1756. Civil and Natural History of Jamaica in Three Parts 338–339 descriptions in Latin, discussion in English
Species 66 species are accepted as of May 2026. There have been many changes in classification the past several years.
formerly placed here Moved to other genera (Caperonia, Chiropetalum, Croton, Philyra, and Speranskia)
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