Banksia ser. Spicigerae
…thought to be the oldest of the series, having developed before the onset of aridity in the Nullarbor Plain. B. spinulosa comprising: B. s. var. collina B. s. var. cunninghamii B. s. var. neoanglica B. s. var. spinulosa B. ericifolia comprising: B. e. var. ericifolia B. e. var. macrantha…