The leaf essential oils of three Eugenia species, E. gacognei Montrouz., E. horizontalis Pancher ex Brongn. & Gris and E. noumeensis Guillaumin, have been examined. Eugenia gacognei was a variable species that contained significant amounts of aromatic ethers, with either 2-hydroxy-4,6-dimethoxy-3,5-dimethyl-acetophenone [1] (36.8% in one collection) or a mixture of 6-hydroxy-2,4-dimethoxy-3-methyl-acetophenone [2] (59.6%) and 2-hydroxy-4,6-dimethoxy-acetophenone [3] (12.7%) in a second collection being the principal components. The remainders of the oil were mixtures of mono- and sesquiterpenes. Eugenia horizontalis gave a terpenoid oil in which the principal components were globulol (18.9%) and spathulenol (14.5%). Eugenia noumeensis also gave a terpenoid oil, with monoterpenes predominating and the major components being 1,8-cineole (47.6%), Î±-terpineol (10.9%) and Î±-pinene (7.7%).