Until the late 18th century the outstanding incorporations to the genus were those from Pehr Forsskål, a Linné student, who sets forth six new species in his "Flora Aegyptiaco-Arabica" in 1775; and also those from Swedish botanist Olof Swartz, author of "Nova Genera et Species Plantarum seu Prodromus," in 1788, where eight new species are published as a result of a journey around Western Indies. In 1789 Antoine de Jussieu also incorporates "Acalypha" in his "Genera Plantarum". 19th century going on, Antonio José Cavanilles describes six species from Mexico: these were collected by Luis Née, a botanist from Malaspina Expedition (Cavanilles, 1800). One year later, such species are again included in his book Icones et Descriptiones Plantarum together with some excellent monochrome drawings."