Description The Ironcap Banksia is the largest of all the varieties of Banksia sphaerocarpa varieties and grows as a shrub or small tree to a height of around four metres. The blue grey leaves are long and narrow with a pointed tip and grow up to 10 cm in length and about 1.5mm wide. It produces ball shaped clusters of golden yellow flowers in autumn. The fruit is a globular woody cone with up to sixty follicles. All varieties have a lignotuber which can sprout new growth after damage by bush fire.
Habitat grows in heathland and shrubland on sandy loan or gravel soil
Distribution B. sphaerocarpa var. dolichostyla is found in the south western corner of Western Australia and is found north west of Esperance in an area further east than other varieties of this species.