Candolle, A.L.P.P. de in Candolle, A.L.P.P. de (ed.) (1868), Cycadaceae. Prodromus Systematis Naturalis Regni Vegetabilis 16(2): 528 [tax. nov.]

• Type: "Ad Port Essington (Armstrong 380 in h. Hook.)"

Hill, K.D. (14 November 1996), A taxonomic revision of the genus Cycas (Cyadaceae) in Australia. Telopea 7(1): 36 [nomenclatural synonym]

nomenclatural synonym of: Cycas armstrongii Miq. legitimate

Hill, K.D. in McCarthy, P.M. (ed.) (1998), Cycadaceae. Flora of Australia 48: 616 [nomenclatural synonym]

nomenclatural synonym of: Cycas armstrongii Miq. legitimate

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