A nomen nudum is not an available name , and therefore the same name may be made available later for the same or a different concept ; in such a case it would take authorship and date [ arts . 50 , 21 ] from that act of establishment , not from any earlier publication as a nomen nudum 一个无资格名称不是适用名称,因此基于同一观念或不同观念,以后可使该名称成为适用;在此情形下,可自建立该名称的举动取得命名者身份和命名日期[第50条,第21条] ,而非自任何较早发表的一个无资格名称。