BROADLEAVED TREES OF YOSEMITE NATIONAL PARK 



33 



in the east. Local elms are one and 

 one-half to two and one-half feet in 

 diameter and from fifty to seventy- 

 five feet tall. The trunk, character- 

 ized by dark, ash-gray bark, divided 

 into numerous flaky ridges, separate:: 

 into several large branches, ten to 

 fifteen feet above the ground, to form 

 a tall, graceful, vase-like crown. The 

 flowers are produced in abundance 

 in loose clusters, usually early in 

 May, and the seeds are fully ripened 

 before the leaves are completely 

 formed. The seeds are small, flat, 

 and completely surrounded by a thin, 

 papery wing — seed and wing being 

 about one-half to three-quarters of an 



inch in diameter. In the late spring 

 they are found in great abundance on 

 the ground in the vicinity of these 

 trees. 



The deep green leaves are alter- 

 nate on the branches, oblong in out- 

 line (about three to five inches long 

 and one to five inches wide), tapering 

 to a point at the apex. They appear 

 lopsided due to the inequilateral na- 

 ture of the base and are coarsely and 

 doubly toothed along the margins. 

 Prominent veins extend from mid-rib 

 to the leaf margin. Their upper sur- 

 face is coarse and rough to the touch, 

 while underneath they are smooth 

 but slightly hairy. 



Photo by Amct Adams 



Yosciiiifc (,7).'(/)i / jii OlJ \'illay,r. Location of nintirroiis introduced trees. 



