The essential oil of the flowering aerial parts of Teucrium scorodonia L. ssp. scorodonia growing in Italy on Verrucano. was analyzed by GC and GC-MS. All the identified compounds were sesquiterpene hydrocarbons. The main ones were germacrene B (26.2%) and P-caryophyllene (25.2%). (c) 2007 Elsevier Ltd. All rights reserved.