Art. 10 of 1966 Code rules that the nomenclatural type of a genus or of any taxon between genus and species is a species. . Furtado (1964) has shown how difficulties can arise from this rule when an author describes a new genus from misidentified specimens, and Weresub (1967) has discussed resulting dilemma in typifying genus. However, Furtado (op. cit.) mentions another difficulty, that is, if genus was described from a new specimen which was correctly referred to an older species, but type of that species was sterile or too imperfect for generic description. The New Zealand monotypic, dioecious genus, Sporadanthus, presents this second type of problem.