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 aquilonia
"Banksia aquilonia" occurs in coastal areas of northern Queensland from the Cedar Bay National Park to Paluma Range National Park, in areas with an annual rainfall of . It occurs from near sea level to an altitude of , in a variety of habitats and aspects. It grows in wet sclerophyll forest or rainforest margins, on plateaus, ridges, slopes and low-lying swampy areas on sandy or rocky soils, generally of granitic origin, or sometimes clay. It commonly grows with tree species such as the pink bloodwood ("Corymbia intermedia"), forest red gum ("Eucalyptus tereticornis"), swamp turpentine ("Lophostemon suaveolens"), forest oak ("Allocasuarina torulosa"), and black sheoak ("A. littoralis"), and understorey species such as coin spot wattle ("Acacia cincinnata") and yellow wattle ("A. flavescens"). Much of its lowland habitat in the Wet Tropics has been degraded or fragmented. Although the range overlaps with "B. dentata", the two species are not known to occur together.