Barringtonia racemosa seed

The Useful Native Plants of Australia’ records that the Indigenous people of the Mitchell River District called this plant “Yakooro” and that “The root of this tree has a bitter taste, and is used by Hindoo [sic.] practitioners on account of its aperient and cooling qualities. The seeds and bark are also used in native medicine; the latter is of a reddish colour, and is said to possess properties allied to the Cinchonas. The pulverised fruit is used as snuff, and, combined with other remedies, is applied externally in diseases of the skin.

Powderpuff tree