The essential oil compositions of three Sicilian accessions of L. growing on three different host trees.

L., (Common Mistletoe), is a hemiparasitic shrub that lives on a wide range of woody plant species, known since Neolithic period for its ritual and for pharmacological properties. Up to now, no investigation has been reported on the chemical composition of the essential oils of aerial parts in relation with the diverse host trees. Consequently, the essential oils compositions of three Sicilian accession of , growing on L., Jacq. and L. var. cv. 'Santagatese', respectively, were evaluated by GC-MS. The three populations showed quite different profiles indicating that the nature of the host considerably influences the chemical composition of the guest plant, .