It also turns out that Indigenous Australians highly valued this flower, and not just for ornamental reasons. The Green flowerbird has been used as a medicine amongst the Aboriginal people, especially as an eyewash to treat ailments. The shape of this unique flowering plant is due to its common anatomical trait, which is shared by several legumes. Some of them have Papilionaceous flowers, which are distinguished by their irregular clusters of five small and a large upper petal that is referred to as a banner.