THE GTMNOSPERM TREES 



TTh 



trees varies from a hundred to one hundred eighty feet with 

 diameters of three to five feet. Unfortunately, large numbers of 

 the older trees have been greatly lowered in commercial value by 

 the attack of a fungus disease causing a rot of the heart wood. 



Fig. 192. — Incense cedar is a stately evergreen of our western states. 



The wood is straight grained, soft, and light weight, and quite 

 resistant to decay when placed in use. 



The Arbor vitaes 



The Arbor vitaes ( Thuja) are unfortunately also commonly 

 called "cedars" which leads to confusion between them and 

 members of the cedar group to be discussed later. Their leaves 



