Australian Plant Name Index (APNI)
The Australian Plant Name Index (APNI) is a tool for the botanical community that deals with plant names and their usage in the scientific literature, whether as a current name or synonym. APNI does not recommend any particular taxonomy or nomenclature. For a listing of currently accepted scientific names for the Australian vascular flora, please use the Australian Plant Census (APC) link above.
Comment:Gardner does not refer directly to a basionym but includes Macrozamia fraseri Miq. in synonymy. In the preface (p. ii) Gardner states that the synonyms in brackets refer to the name as used in Bentham's Flora Australiensis. Bentham, Fl. Austral. 6: 252 includes Cycas riedlei as a synonym of M. fraseri Miq. Thus Gardner's combination is by indirect reference to the basionym.