346 POWDERED VEGETABLE DRUGS 



93. (Fig. 100.) GALLA. Chinese Galls. 

 Fl. ex. 40. Tinct. 40. 



Chinese galls, Japanese galls, E. Chinesische Gallapfel, Japanesische 

 Gallapfel, G. 



Galls produced upon the leaves and leaf stalks of Rhus semialata 

 Murray, by Aphis chinensis, Insecta. 



Brownish ash gray. 



Odorless. 



Very astringent. 



Numerous mostly single-celled trichomes, rather thick-walled, 

 pointed ends recurved. Thin-walled parenchyma with a few mostly 

 simple starch granules. Greenish yellow resin masses. 



The two galls are markedly different histologically. Compare 

 with other varieties. The Japanese and Chinese galls are closely 

 similar histologically. 



