FLORA OF THE UNITED STATES 



267 



and not a few noxious weeds, which have been imported 

 from other countries and have found an agreeable home 

 here. 



The largest and perhaps most remarkable trees 'in the 

 United States are the Big Trees of California, a species of 

 redwood. Trees of this species have been measured which 



A CALIFORNIA BIG TREE. 

 Notice the size at the base. 



were 325 ft. high, more than 100 ft. higher than Bunker 

 Hill Monument, and others which were more than 90 ft. 

 in circumference. A plant which has probably appro- 

 priated more territory than any other plant in the world 

 is the "sage brush" of the arid western plains. These 

 low grayish shrubs cover hundreds of thousands of square 

 miles. They are useless except for fuel. In the well- 



