Abstract: The essential oil of roots from Valeriana iatamansi Jones was analysed qualitatively and quantitatively by means of fractional distillation, silican gel or alumina column chromatography, TLC, GLC, chemical and spectrometric methods. Eight components have been identified,limonene (0. 8%). l, 8-cineole (0. 3%), Plcymene (1 .2 %), borneol acetate (7. 2%), borneol, (4. 5%), nerolidol (1.0%), maaliol(11.6%).

Key words: chemical, constituents, valeriana