George, A.S. in McCarthy, P.M. (ed.) (1995), Appendix: Synaphea. Flora of Australia 16: 490-491 APC [tax. nov.]

• Type: c. 6 km E of Busselton on road to Nannup, W.A., 20 Oct. 1993, A.S.George 17082; holo:PERTH, iso: AD, CANB, K, MEL, NSW.

• APC Dist.: WA

• Etymology: "The epithet is the Latin for gaping or open-mouthed, in reference to the widely-opening perianth."

George, A.S. in McCarthy, P.M. (ed.) (1995), Synaphea. Flora of Australia 16: 304, Map 351 [secondary reference]

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 851 [secondary reference]

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