Brown, R. (1830), Proteaceas Novas. Supplementum primum prodromi florae Novae Hollandiae: 7 [tax. nov.]

• Type: "Ora merid. occid., Swan River, 1827. D. Fraser."

Druce, G.C. (1917), Nomenclatorial Notes: chiefly African and Australian. The Botanical Exchange Club and Society of the British Isles Report for 1916, Suppl. 2: 629 [basionym]

basionym of: Isopogon dubius (R.Br.) Druce legitimate

Wrigley, J.W. & Fagg, M. (1989), Banksias, Waratahs & Grevilleas and all other plants in the Australian Proteaceae family: 431 [nomenclatural synonym]

nomenclatural synonym of: Isopogon dubius (R.Br.) Druce legitimate

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Appendix: Petrophile. Flora of Australia 16: 479 [secondary reference]

• Lectotype: Swan River [W.A.], 1827, W.Baxter; lecto (here chosen): BM.

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Isopogon. Flora of Australia 16: 219 [nomenclatural synonym]

nomenclatural synonym of: Isopogon dubius (R.Br.) Druce legitimate

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Petrophile. Flora of Australia 16: 193 [secondary reference]

• Text: "This is Isopogon dubius (R.Br.) Druce."

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [secondary reference]

orthographic variant: Petrophila dubia R.Br. orth. var.

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Isopogon dubius (R.Br.) Druce legitimate

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