Cyathea australis subsp. norfolkensis Holttum legitimate | sensu Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census
Alsophila australis subsp. norfolkensis (Holttum) A.R.Field legitimate
Alsophila australis R.Br. auct. non R.Br.: Bentham, G. (March 1878), Flora Australiensis 7: 710, p.p. Cyathea medullaris (G.Forst.) Sw. auct. non (G.Forst.) Sw.: Endlicher, S.F.L. (1833), Prodromus Florae Norfolkicae: 15
  • NI