In the same year, Mast and Thiele transferred the two subspecies to Banksia and the changes have been accepted by the Australian Plant Census: B. ionthocarpa subsp. chrysophoenix has a lignotuber, almost straight leaf lobes and larger flower parts than the autonym; B. ionthocarpa subsp. ionthocarpa lacks a lignotuber, has gently curved leaf lobes and smaller flower parts that subsp. chrysophoenix. Distribution and habitat Subspecies chrysophoenix grows in kwongan and is only known from near Kamballup, north-east of the Porongurup National Park. Subspecies ionthocarpa usually also grows in kwongan and is known from three populations near Brookton. Conservation status Both subspecies of B. ionthocarpa have been classified as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia). References ionthocarpa Plants described in 1996 Taxa named by Alex George