Calytrix breviseta is a species of plant in the myrtle family Myrtaceae that is endemic to Western Australia. The shrub typically grows to a height of . It blooms between August and November producing blue-purple star-shaped flowers. Often found on swampy flats in the Wheatbelt and the south eastern Goldfields-Esperance region where it grows in sandy-clay to loamy soils. There are two recognized subspecies: Calytrix breviseta subsp. breviseta Calytrix breviseta subsp. stipulosa References Plants described in 1839 breviseta Flora of Western Australia