The genusLippiaHoust. (Verbenaceae Juss.) consists of nearly 200 species of herbs, shrubs and small trees which are often aromatic. Of these, thirty nine species have had some previous work done on their essential oil compositions. A summary of these studies is presented, in which the composition of each of the oils is listed quantitatively where possible. The component which was found to occur in the highest frequency in dieLippiaoils was limonene. Other components found in these oils, in order of decreasing frequency, were: p-cymene, α-pinene, camphor, β-caryophyllene, linalool and thymol.