Abstract
The chemical composition of the essential oil (EO) obtained from the aerial parts of Stachys benthamiana Boiss. was analyzed by GC and GC-MS. Thirty-four components were identified in the oil. Undecanoic acid (20.86%), dodecanoic acid (14.49%), dodecanal (11.07%), caryophyllene oxide (9.4%), spathulenol (8.6%), decanoic acid (6.84%) and β-eudesmol (4.94%), were the main compounds in the EOs. This is the first report of different chemical compositions of S. benthamiana EOs from the southern Zagros of Iran.