The water distilled essential oils from the aerial parts of Rhanterium adpressum Coss. & Durieu. was analyzed by GC/MS. The oil was characterized by the presence of high amounts of Spathulenol (19.6%), β-Eudesmol (15.2%), Bicyclo[4.4.0]dec-1-ene, 2-isopropyl-5- methyl-9-methylene (12.9%), b-Cadinol (11.3%), α-Cadinol (6.56 %), α-Eudesmol (5.37 %), Myristicin (5.05 %), 2H-Pyran-3-ol, and tetrahydro-2-(1,7-nonadiene-3,5-diynyl) (4.81 %). Nevertheless, some other compounds were only present in minor amounts such as n-Tridec- 1-ene (0.54), n-Hexadecan-1-ol (0.52), 1-Butyl 2-(2-ethylhexyl) phthalate (0.59). In total, volatile oil composition of
