Lippia.—A number of the species of this genus (Fam. Verbenaceae) contain aromatic oils, and several have been used in popular medicine. The L. citriodora, H. B. K., yield verbena oil, and is commonly known as Lemon verbena. From the L. mexicana, Podwissotzki (Proc. A. Ph. A., 1886) separated an essential oil somewhat resembling that of fennel, as well as a camphor-like substance which he named lippiol. According to Maisch (A. J. P., xxlvii, p. 330), however, the plant used by Podwissotzki was probably the Cedronella mexicana (Benth.). Power and Tutin (A. Pharm., 1907, ccxiv, p. 337) found in the L. scaberrima (Sonder), a native of South Africa, where it is popularly known as Beukess boss, an essential oil somewhat resembling lavender in its odor, a peculiar crystalline substance, which they named lippianol, having the qualities of a mono-hydric alcohol, and a number of other substances not peculiar to the plant.
The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.