Lithomyrtus retusa is a member of the family Myrtaceae native to Western Australia, the Northern Territory, and Queensland. It was first described in 1834 by Stephan Endlicher as Fenzlia retusa,Endlicher, S.F.L. (1834), Atakta Botanika 3: 20, t. XVIII. but in 1999 it was assigned to the genus, Lithomyrtus, to give its currently accepted name, by Neil Snow and Gordon Guymer.

The small tree or shrub typically grows to a height of . It blooms between January and December producing white-pink flowers.

It is found in gullies, escarpments and streambanks in the Kimberley region of Western Australia where it grows in skeletal soils over sandstone.

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