Abstract Dried flowering plants of Salvia hydrangea DC. ex Benth. were collected from Isfahan (Isfahan province) in June 2001 and hydrodistilled to produce a light-yellow oil at the yield of 0.2%.The oil was analyzed by GC and GC/MS. Twenty-eight compounds were identified, among which Î²-caryophyllene(33.4%) and caryophyllene oxide (25.4%) were the major constituents.