Backhousia tetraptera

The only known population occurs at the foot of Mount Stuart near Townsville in Queensland, Australia.

[3][4] The species grows to between 5 and 12 metres high often with multiple trunks that have a mottled flaking bark including grey, grey-brown and/or pink colouration.

Flowering is induced by the first significant rainfall of the wet season, appearing four weeks later.

[3] The distinctive fruits are capsules with four wings that appear in clusters and fade from pink to white and dry to brown.

[2][5] As of September 2024[update] it was designated critically endangered under the EPBC Act.