THE BARBERRY IN IOWA 



205 



Width of Rixc;s Difi'ekext Yeahs. Wii-d Bai!I!i:khy ikom ('iiaimn Place, 



McGreguu. Iowa. 



1901 wide 



1902 narrow 



1903 narrow 



1904 narrow 



1905 narrow 



1906 narrow 



1907 wide 



1908 wide to medium 



1909 widest 



1910 medium 



1911 mediuni 



1912 medium 



1913 medium 



1914 wide 



1915 medium 



1916 medium 



1917 wide 



1918 medium 



Fig. 52. Old stem and root of common Barberry showing the older portion 



in center and two lateral stalks. (C. M. King.) 



The annual rings are somewhat unequal, but the largest annual 

 ring of the Chapin barberry occurred in 1901. 



Mr. L. E. Foglesong, the associate landscape architect of Des 

 Aloines, sent to me a large barberry bush from the state house 

 grounds, Des Moines, set out by Mr. Jackson in 1896. As near as 

 I can determine these branches had rings as follows : 



