Schuster, J. in Engler, H.G.A. (1932), Cycadaceae. Das Pflanzenreich 99(4,1): 78 [comb. nov.]

basionym: Cycas basaltica C.A.Gardner legitimate

Hill, K.D. (14 November 1996), A taxonomic revision of the genus Cycas (Cyadaceae) in Australia. Telopea 7(1): 58 [nomenclatural synonym]

nomenclatural synonym of: Cycas basaltica C.A.Gardner legitimate

Hill, K.D. in McCarthy, P.M. (ed.) (1998), Cycadaceae. Flora of Australia 48: 632 [nomenclatural synonym]

nomenclatural synonym of: Cycas basaltica C.A.Gardner legitimate

Laubenfels, D.J. de & Adema, F. (1998), A taxonomic revision of the genera Cycas and Epicycas gen.nov. (Cycadaceae). Blumea 43(2): 366 [taxonomic synonym]

taxonomic synonym of: Cycas normanbyana F.Muell. legitimate

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