Thomasia hexandra S.Moore Lysiosepalum hexandrum is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia.

It is dense, erect shrub with its young branches covered with woolly, star-shaped hairs, and has linear or narrowly elliptic leaves and blue, purple or pink flowers usually in groups of five.

[2][3][4] This species was first formally described in 1921 by Spencer Le Marchant Moore who gave it the name Thomasia hexandra in the Journal of Botany, British and Foreign from specimens collected near Beverley by Oswald Hewlett Sargent.

[8] This species of lysiosepalum grows in the understorey of open woodland or heath between Wongan Hills and Nyabing in the Avon Wheatbelt and Mallee bioregions in the south-west of Western Australia.

[2][3][4] Lysiosepalum aromaticum is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.