Banksia spinulosa
The hairpin banksia ("Banksia spinulosa") is a species of woody shrub, of the genus "Banksia" in the family Proteaceae, native to eastern Australia. Widely distributed, it is found as an understorey plant in open dry forest or heathland from Victoria to northern Queensland, generally on sandstone though sometimes also clay soils. It generally grows as a small shrub to in height, though can be a straggly tree to . It has long narrow leaves with inflorescences which can vary considerably in coloration; while the spikes are gold or less commonly yellowish, the emergent styles may be a wide range of colours – from black, purple, red, orange or yellow.
Banksia dentata
Across northern Australia, "Banksia dentata" has been recorded as far west as the King Leopold Ranges in the western Kimberley through the Northern Territory and extending south to Katherine Gorge and into Queensland, where it is found on the Cape York Peninsula to as far south as Cooktown. Off the coast, it has been recorded from Groote Eylandt and the Wessel Islands, as well as Melville and Bathurst Islands. It also extends onto the Aru Islands, where it is found around Trangan, and New Guinea, where it ranges in the south from Merauke east to Port Moresby, and around Bulolo and Mount Mau. It is the only "Banksia" species not endemic to Australia. As much of its range is in remote and poorly surveyed country, it is possible that it is found more widely than has been recorded. Pollen samples indicate it has been present on the Torres Strait Islands over the past 8000 years, though it has not been a prominent component of the island flora.