Banksia splendida subsp. macrocarpa is a subspecies of Banksia splendida. It was known as Dryandra speciosa subsp. macrocarpa until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a species named Banksia speciosa, Mast and Thiele had to choose a new specific epithet for D. speciosa and hence for this subspecies of it.[1] As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.