32 



YOSEMITE NATURE NOTES 



These "outsiders" of the original 

 generation remain among the natives 

 by sufferance. It is the policy of the 

 National Park Service to eliminate in 

 so far as possible all exotic plants and 

 animals which may gain a foothold 

 in the national parks, but these living 

 relics of pioneer days in Yosem!t3 

 Valley may remain until Nature deals 

 the inevitable death blow. They w 1' 



not be replaced except by their scat- 

 tered progeny which may escape the 

 watchful eye of the forester. In time, 

 even the scattered progeny will suc- 

 cumb to Nature's control. 



For those visitors who may wish to 

 seek and identify the American elm, 

 the black locust, and the sugar maple 

 in Yosemite Valley, a description of 

 these species follows. 



AMERICAN ELM 

 Ulmus amsricana L — Elm Family (Ulmaceae) 



This is one of the most noble and 

 stately of native American trees. Its 

 natural range includes a large part 

 of the eastern United States and Can- 

 ada — from Newfoundland south to 

 central Florida, and westward to 

 Manitoba and eastern Texas. It is 

 one of the most familiar of trees in 

 the New England states, and it was 



from that region (Massachusetts) that 

 the seed which was planted by Hut- 

 chings was secured. (See page 30). 

 Since it grows best in rich, moist, 

 alluvial soil in its native habitat, it 

 found in Yosemite Valley a suitable 

 environment. Many of the trees 

 planted here now ore quite large and 

 comoare favorably with those 



Vi.ulu by Bru.k 



loliunc and Mills of American dm (Inch squares on backf^rininil) 



