Synaphea endothrix is a shrub endemic to Western Australia.
The erect and clumped shrub typically grows to a height of 0.6m (02feet) and usually blooms between August and September producing yellow flowers.
It is found on lateritic rises along the west coast in the Wheatbelt region of Western Australia between Coorow and Dandaragan where it grows in sandy-loamy-gravelly soils over laterite.