Synonyms: Aylostera kruegeri; Aylostera krugerae (homotypic); Lobivia hoffmanniana; Rebutia kruegerae; Rebutia kruegeri; Rebutia krugerae (homotypic); Rebutia steinbachii kruegerae; Rebutia steinbachii kruegeri; Rebutia steinbachii krugerae; Sulcorebutia kruegeri; Sulcorebutia kruegeri var. hoffmannii; Sulcorebutia krugerae; Sulcorebutia krugerae var. hoffmannii; Sulcorebutia steinbachii kruegerae; Sulcorebutia steinbachii kruegeri; Sulcorebutia steinbachii krugerae (homotypic); Sulcorebutia steinbachii krugerii; Sulcorebutia steinbachii var. hoffmannii; Weingartia krugerae (homotypic); Weingartia steinbachii krugerae (homotypic); Weingartia steinbachii var. hoffmannii