|🌵 Author(s)||Curt Backeberg|
|🌵 Type||Islaya minor|
Named for the species Echinocactus islayensis (= Eriosyce islayensis), which was named for the occurrence in the province of Islaya, Arequipa, Peru. The type species, however, is not Islaya islayensis, but Islaya minor (designated by Backeberg in 1942).
Generic names of this type are discouraged in Recommendation 20A.1(g) of the International Code of Nomenclature (“Authors forming generic names should comply with the following: […] Not use a name similar to or derived from the epithet in the name of one of the species of the genus.”).