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Boronia (family Rutaceae) A genus chiefly of shrubs less than a metre tall that have strongly aromatic leaves and 4-petalled, star-like flowers which are usually pink. They are found on heath-land and in dry sclerophyll forests (see SCLEROPHYLLOUS VEGETATION) in shady places. There are 96 species, found mainly in temperate Australia, with a few also in New Caledonia.