Banksia ser. Tetragonae
Banksia ser. Tetragonae is a taxonomic series in the genus Banksia. It consists of three closely related species of erect shrub with pendulous inflorescences in section Banksia. These are:
| Image | Scientific name | Distribution |
| B. lemanniana | Western Australia | |
| B. caleyi | Western Australia, from South Stirling to the West River and northeast to Pingrup | |
| B. aculeata | Stirling Range in the southwest of Western Australia |