Banksia ser. Tetragonae is a taxonomic series in the genusBanksia. It consists of three closely related species of erect shrub with pendulous inflorescences in section Banksia.[1] These are:
Stirling Range in the southwest of Western Australia
References
^George, Alex (1999). "Banksia". In Wilson, Annette (ed.). Flora of Australia. Vol. 17B: Proteaceae 3: Hakea to Dryandra. Collingwood, Victoria: CSIRO Publishing / Australian Biological Resources Study. pp. 175–251. ISBN0-643-06454-0.