In his 1981 monograph "The genus Banksia L.f. (Proteaceae)", Australian botanist Alex George resurrected "B. blechnifolia" as a valid species, placing it in "B." subgenus "Banksia" because its inflorescence is a typical "Banksia" flower spike shape, in "B." section "Banksia" because of its straight styles, and "Banksia" series "Prostratae", because of its prostrate habit, along with five other closely related species. George, like von Mueller, held it to be related to "B. repens" and . In 1996, botanists Kevin Thiele and Pauline Ladiges published an arrangement informed by a cladistic analysis of morphological characteristics. This arrangement maintained the species' placement in ser. "Prostratae" but found the most closely related taxon to be , based on their common narrow-lobed leaves, and the next closest relative to be "B. repens". George later published an updated version of his 1981 arrangement in his 1999 treatment of "Banksia" for the "Flora of Australia" series of monographs. In all three arrangements, section "Prostratae" is circumscribed with little to no differences, though its placement within the broader system differs. The placement of "B. blechnifolia" in George's 1999 arrangement may be summarised as follows: