Westringia eremicola, commonly known as slender westringia or slender western rosemary, is a flowering plant species that is endemic to south-eastern Australia It is a slender shrub growing to 1.5 metres high. Leaves are about 8 to 20 mm long and 0.8 to 1.6 mm wide with hairs on both surfaces. They appear in whorls of three or four.