The studies carried out in the adjoining areas of Sasnamama forest revealed that mistletoe has crossed into Chasnak forest, through the northern ridge, at a point about 6.8 kilometers from the Mana village. The parasite was extending east-ward. The incidence of infection was 24% for all the study trees within 1.6 km of the ridge. The highest incidence of infection was in trees growing on the ridge. The incidence decreased as the distance from the ridge increased.