SUMMARY
The essential oil of Ceratocystis virescens was analyzed by means of gas and thin-layer chromatography, infrared spectrometry, mass spectrometry and chemical means. The oil from C. virescens was compared for chemotaxonomic purposes with that of C. variospora. The major constituents in the oil of C. virescens were: 6-methyl-5-hepten-2-ol acetate, linalool and geranyl acetate. One cyclic terpene, a-terpineol, was isolated.