Inventory 42, Seeds and Plants Imported. 



Plate IX. 



A Hardy Gum-Producing Tree 



in Kansu, China (Eucommia ulmoides, S. 

 No. 40028). 



P. I. 



The Tu chung or Shihmien shu treo of Kansu is planted with poplars along roadsides, and its long 

 slender steins are used for house building. It grows to 80 feet in height, preferring shelter from 

 other trees. It has proved hardy at Washington. Its bark and leaves contain a peculiar gum, 

 which as yet has been imperfectly investigated by chemists, but which among the Chinese is 

 highly prized. The ground-up bark is given as a heart stimulant, and is said to especially benefit 

 confirmed opium smokers. Photographed by Frank N. Meyer near Fuorryi, Kansu, October 7, 

 1914 (P12164FS). 



