Banksia ser. Salicinae

In 1996, Kevin Thiele and Pauline Ladiges undertook a cladistic analysis of morphological characters of "Banksia", which yielded a phylogeny somewhat at odds with George's taxonomic arrangement. They found George's "B." ser. "Salicinae" to be monophyletic, their cladogram placing it in a clade whose sister clade consisted of the members of George's "B." ser. "Quercinae" and "B." ser. "Spicigerae":
Thiele and Ladiges therefore retained George's "B." ser. "Salicinae", further dividing it into two subseries, "B." subser. "Acclives" and "B." subser. "Integrifoliae", in accordance with the resolution of clades in their analysis. The placement and circumscription of "B." ser. "Abietinae" in Thiele and Ladiges' arrangement may be summarised as follows: