Acalypha (from either Greek, "nettle") is a plant genus of the family Euphorbiaceae and the resole genus of the subtribe Acalyphinae. By using 450 to 500 species of herbs to shrubs, the genus is sole behind Euphorbia, Croton and Phyllanthus in term of diversity. Acalypha hispida, cultivated as houseplant because of its colorful and texturally exciting flowers, is by far a right-known metal money. Others come grown for their foliage.

Distribution
These coinage come mostly tropical or subtropical (but not present in Hawaii and several more Pacific Islands), with two or three representatives around temperate zones. A Americas contain two third of the known metal money, distributed from either southern United States to Uruguay and northern Argentina.

Taxonomy
A as a result genera use at times been brought into synonymy with Acalypha: Acalyphes Hassk. Acalyphopsis Pax & K.Hoffm. Calyptrospatha Klotzsch ex Baill. Caturus L. Corythea S.Watson Cupameni Adans. Galurus Spreng. Gymnalypha Griseb. Linostachys Klotzsch ex Schltdl. Mercuriastrum Fabr. Odonteilema Turcz. Paracelsea Zoll. Ricinocarpus Kuntze Schizogyne Ehrenb. ex Pax Usteria Dennst