Banksia ionthocarpa subsp. ionthocarpa

'Banksia ionthocarpa'' subsp. ionthocarpa' is a subspecies of Banksia ionthocarpa''. As an autonym, it is defined as encompassing the type material of the species. It was known as 'Dryandra ionthocarpa'' subsp. ionthocarpa' until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia''. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.