Loranthus europaeus is a semi-parasitic plant which lives on Persian oak trees in western forest of Iran. This book was prepared for students and researchers in the field of Natural Resources Research with the aim of introducing the mistletoe of Loranthus europaeus in western forests of Iran and how to control it mechanically. The following topics are discussed in this book. - General characteristics of L. europaeus - Phenology of L.europaeus - Distribution and Contamination of L.europaeus - Morphological and physiological effects of L.europaeus on host tree - Control methods of L.europaeus