Cladanthus eriolepis (C. eriolepis) (Coss. ex Maire) Oberpr. & Vog. is endemic to High Atlas (Dades Gorge and Todgha Gorge), the Anti Atlas and Saharan Morocco. It is known under the vernacular names âAlougjim, gtaa-eddib, laatetechaâ and âLamghizalâ. Two essential oil samples have been isolated from aerial parts and analyzed by combination of chromatographic and spectroscopic techniques [gas chromatography (GC) in combination with retention indices (RI), gas chromatography-mass spectrometry (GC/MS) and 13C-NMR spectroscopy]. The compositions of both oil samples were dominated by hemiterpene esters such as isobutyl isobutyrate (21.2% and 20.8% respectively) and isobutyl angelate (22.0% and 22.4% respectively). Other esters present at appreciable contents were 2-methylallyl isobutyrate (5.3% and 5.5%), 2-methylbutyl isobutyrate (5.7% and 5.8%), 2-methylallyl angelate (4.6% and 4.9%) and 2-methylbutyl angelate (7.7% and 7.2%) beside Î±-pinene (9.5% and 5.8%) and Î²-bisabolene (2.8% and 4.0%). The compositions of the investigated oil samples from C. eriolepis differed substantially with literature data and with those of other Cladanthus species growing wild in Morocco.