Jones, D.L. & Forster, P.I. (1 September 1994), Seven new species of Macrozamia section Parazamia (Miq.) Miq. (Zamiaceae section Parazamia) from Queensland. Austrobaileya 4(2): 278, fig. 5 [tax. nov.]

• Type: Queensland. Darling Downs District: Sundown National Park, Darling Downs District, 8 Jan.1993, P.I. Forster 12663B & P.Machin [male plant] (holo: BRI [2 sheets & carpological]; iso: CBG).

• Etymology: "The epithet derives from the Latin occiduus, going down, setting, an oblique reference to the Sundown country where the type specimen was collected."

Hill, K.D. in McCarthy, P.M. (ed.) (1998), Zamiaceae. Flora of Australia 48: 656, Map 600 APC [secondary reference]

• APC Dist.: Qld

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 23 [secondary reference]

Forster, P.I. (7 December 2022), Austrobaileya publication dates 1977–2022. Austrobaileya 12: 118 [secondary reference]

• Comment: Publication date corrected to 1 September 1994

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