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

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

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 65 [secondary reference]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 65 [secondary reference]

Rye, B.L. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Proteaceae. Flora of the Perth Region 1: 352 [secondary reference]

Wrigley, J.W. & Fagg, M. (1989), Banksias, Waratahs & Grevilleas and all other plants in the Australian Proteaceae family: 505 (map) [secondary reference]

• Etymology: ;"From Greek, macro-, long or large, and -stachyus, relating to a spike; refers to the very long thin cone."

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Petrophile. Flora of Australia 16: 183, 185, Fig. 96, Map 173 [secondary reference]

• APC Dist.: WA

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 152-153, photos 7-9 [secondary reference]

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

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

• APC Dist.: WA

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