Gardner, C.A. (1964), Contributiones Florae Australiae Occidentalis, XIII. Journal of the Royal Society of Western Australia 47(2): 55 [tax. nov.]

• Type: "Hab. in distr. Stirling haud procul King George's Sound, juxta flumen King, in arenosis glareosis in fruticetis, fl. m. Junio, leg. A.J. Gray (TYPUS)."

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

Wrigley, J.W. & Fagg, M. (1989), Banksias, Waratahs & Grevilleas and all other plants in the Australian Proteaceae family: 445 (map) [secondary reference]

common name: round leaf honeysuckle [n/a]

• Etymology: "From Latin, orbis, circle or orb, and folium, a leaf, referring to the round leaves."

Hopper, S.D., van Leeuwen, S.J., Brown, A.P. & Patrick, S.J. (1990), Western Australia's Endangered Flora: 19, 71, Fig. 188 [secondary reference]

common name: Round-leaf Honeysuckle [n/a]

Hnatiuk, R.J. in McCarthy, P.M. (ed.) (1995), Lambertia. Flora of Australia 16: 433-434, Fig. 185, Map 485 APC [secondary reference]

common name: Roundleaf Honeysuckle [n/a]

• APC Dist.: WA

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 22 [secondary reference]

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 840 [secondary reference]

common name: Round-leaf Honeysuckle [n/a]

Wege, J.A., Monks, L.T., Webb, A.D., Binks, R.M. & Coates, D.J. (27 April 2023), Taxonomic resolution of infraspecific taxa in Lambertia orbifolia (Proteaceae) using molecular and morphological evidence. Nuytsia 34: 131-132 [secondary reference]

• Type: "Prope King River, King George’s Sound, Western Australia, June 1962, A.J. Gray s.n. (holo: PERTH 01006576)."

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