The present invention concerns compound of formula (I) in the form of any one of its stereoisomers or a mixture thereof and wherein the exocyclic dotted line represents a carbon carbon single or double bond and one endocyclic dotted line represents a carbon carbon single bond and the other endocyclic dotted line represents a carbon carbon double bond and R R1 and R2 represent independently from each other a hydrogen atom or a C1 3 alkyl group and their use in perfumery to impart odor notes of the green floral type.