Trees and Timber 



375 



Mistletoe ^^^ (Phoradendron and Razoumofskyd) . — While 

 not generally considered pests, these parasites under favora- 

 ble weather conditions may become so, especially upon trees 



Fig. 197. — Trees infesteci with mistletoe. Courtesy of the School 

 of Botany of the University of Texas. 



in lawns and parks. They usually attack the smaller branches 

 of the trees, and thus cut off the nourishment from their 

 tips and eventually cause these portions to die. The general 

 effect is to spoil the beauty of the tree. On forest trees they 

 cause small diameters, reduced height, and scraggy crowns. 



