Fitzgerald, W.V. (January 1912), New West Australian plants. Journal of Botany, British and Foreign 50: 22 [tax. nov.]

• Type: "Watheroo, rabbit-proof fence; Max Koch (no. 1522)."

Hopper, S.D., van Leeuwen, S.J., Brown, A.P. & Patrick, S.J. (1990), Western Australia's Endangered Flora: 118, 132 [secondary reference]

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Petrophile. Flora of Australia 16: 185, Fig. 96, Map 174 [secondary reference]

taxonomic synonym: Petrophile semifurcata var. planifolia F.Muell. legitimate

• APC Dist.: WA

Rye, B.L., Hislop, M., Shepherd, K.A. & Hollister, C. (29 August 2011), New south-western Australian members of the genus Petrophile (Proteaceae: Petrophileae), including a hybrid. Nuytsia 21(2): 60 [secondary reference]

taxonomic synonym: Petrophile semifurcata var. planifolia F.Muell. legitimate taxonomic synonym: Petrophile conifera var. incurvata C.A.Gardner manuscript name

Council of Heads of Australasian Herbaria (2014), Australian Plant Census: - APC [secondary reference]

orthographic variant: Petrophila incurvata W.Fitzg. orth. var. taxonomic synonym: Petrophile semifurcata var. planifolia F.Muell. legitimate taxonomic synonym: Petrophile conifera var. incurvata C.A.Gardner manuscript name

• APC Dist.: WA

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