Styphelia decussata is a species of flowering plant in the heath family Ericaceae and is endemic to the south-west of Western Australia.
It is a slender shrub with many branches, overlapping triangular to egg-shaped leaves, and white, tube-shaped flowers arranged singly in upper leaf axils.[1] It was first formally described in 1904 by Ernst Georg Pritzel who gave it the name Leucopogon tamminensis var. australis in Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie.[2]
In 2020, Michael Clyde Hislop, Darren M. Crayn and Caroline Puente-Lelievre transferred it to the genus Styphelia and raised it to species status. Since the name Styphelia australis was used for a different species, (Styphelia australis (R.Br.) F.Muell., now known as Leucopogon australis R.Br.)[3] the species was given the name Styphelia decussata.
Styphelia decussata is widely distributed between Corrigin, Boxwood Hill and Munglinup in the Avon Wheatbelt, Esperance Plains and Mallee of south-western Western Australia.[4]