Brown, R. (1830), Proteaceas Novas. Supplementum primum prodromi florae Novae Hollandiae: 5 [tax. nov.]

• Type: "Ora occid.-merid., King George's Sound, 1829. D. Baxter."

• Comment: Published as `β caulescens'.

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Petrophile. Flora of Australia 16: 163 [taxonomic synonym]

taxonomic synonym of: Petrophile longifolia R.Br. legitimate

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - [secondary reference]

orthographic variant: Petrophila longifolia var. caulescens R.Br. orth. var.

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Petrophile longifolia R.Br. legitimate

Rye, B.L. & Hislop, M. (16 December 2005), A taxonomic update of Petrophile sect Arthrostigma (Proteaceae). Nuytsia 15(3): 470 [taxonomic synonym]

taxonomic synonym of: Petrophile longifolia R.Br. legitimate

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