Abstract The chemical composition of the essential oil of Stentonia nudicaulis Boiss., collected from Takab (western Iran), was examined by GC and GC/MS. Fifty-seven components were characterized. The main components were Î²- sesquiphellandrene (25.3%), hexyl butyrate (15.7%), patchouli alcohol (10.3%), 8-cedren-13-ol (4.1%) and Î³-eudes-mol (3.5%).