Johnson, L.A.S. & Briggs, B.G. (1975), On the Proteaceae - the evolution and classification of a southern family. Botanical Journal of the Linnean Society 70(2): 176 [comb. nov.]

• Lectotype: Clarence River, NSW; H.Beckler s.n.; fide H. Sleumer, Blumea 8: 5 (1955).

basionym: Helicia praealta F.Muell. legitimate

Floyd, A.G. (1978), Forestry Commission of New South Wales Research Note: 10-11 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 178 [secondary reference]

nomenclatural synonym: Helicia praealta F.Muell. legitimate nomenclatural synonym: Macadamia praealta (F.Muell.) F.M.Bailey legitimate

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Proteaceae. Flora of South-eastern Queensland 2: 16 [secondary reference]

nomenclatural synonym: Helicia praealta F.Muell. legitimate nomenclatural synonym: Macadamia praealta (F.Muell.) F.M.Bailey legitimate common name: A Beefwood [n/a] common name: Opossum Nut [n/a] common name: Ball Nut [n/a]

Thomas, M.B. & McDonald, W.J.F. (1987), Rare and threatened plants of Queensland: a checklist of geographically restricted, poorly collected and/or threatened vascular plant species Edn. 1: 43 [secondary reference]

Floyd, A.G. (1989), Rainforest Trees of Mainland South-eastern Australia: 286 (fig.) [secondary reference]

nomenclatural synonym: Helicia praealta F.Muell. legitimate nomenclatural synonym: Macadamia praealta (F.Muell.) F.M.Bailey legitimate common name: Beefwood [n/a] common name: Big Nut [n/a] common name: Possum Nut [n/a] common name: Ball Nut [n/a]

Thomas, M.B. & McDonald, W.J.F. (1989), Rare and threatened plants of Queensland: a checklist of geographically restricted, poorly collected and/or threatened vascular plant species Edn. 2: 45 [secondary reference]

Wrigley, J.W. & Fagg, M. (1989), Banksias, Waratahs & Grevilleas and all other plants in the Australian Proteaceae family: 156 (plate), 186 (fig.), 187 (map) [secondary reference]

nomenclatural synonym: Helicia praealta F.Muell. legitimate nomenclatural synonym: Macadamia praealta (F.Muell.) F.M.Bailey legitimate common name: macadamia [n/a] common name: big nut [n/a] common name: opossum nut [n/a] common name: possum nut [n/a] common name: ball nut [n/a] common name: beefwood [n/a]

• Etymology: "From Latin, prae-, very, and altus, high; refers to the tall habit of the tree."

Harden, G.J. in Harden, G.J. (ed.) (1991), Floydia. Flora of New South Wales 2: 65, pl. 5 [secondary reference]

common name: Ball Nut [n/a]

Robson, Peter J. (1993), Checklist of Australian Trees: alphabetical listings of common and scientific names: - [secondary reference]

common name: Bull Nut [n/a] common name: Opossum Nut [n/a] common name: Macadamia [n/a] common name: Big Nut [n/a] common name: Beefwood [n/a] common name: Ball Nut [n/a]

Foreman, D.B. in McCarthy, P.M. (ed.) (1995), Floydia. Flora of Australia 16: 417-419, Figs 149, 180, Map 467 APC [secondary reference]

nomenclatural synonym: Helicia praealta F.Muell. legitimate nomenclatural synonym: Macadamia praealta (F.Muell.) F.M.Bailey legitimate common name: Possum Nut [n/a] common name: Ball Nut [n/a]

• APC Dist.: Qld, NSW

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 21 [secondary reference]

Harden, G.J. in Harden, G.J. (ed.) (2002), Floydia. Flora of New South Wales Revised Edition 2: 79 [secondary reference]

common name: Ball Nut [n/a]

---