344 POWDEEED VEGETABLE DRUGS 



92. (Fig. 99.) GALLA. Nutgall. U. S. 

 Fl. ex. 40. Tinct. 40. 



Aleppo galls, Galls, E. Gallen, Gallapfel, G. Galle de chene, Noix 

 de galle, Fr. 



Warty (sub-globular) excresences upon Quercus infectoria Oliv., 

 Fagaceae, caused by the punctures, eggs and larvae of Cynips Gallae 

 tinctoriae, Insecta. 



Ash gray. 



Inodorous. 



Very astringent. 



Large celled, thin-walled parenchyma and some rather thick-walled 

 parenchyma. Compound starch granules. Yellowish porous scleren- 

 chyma with walls of medium thickness. Some parenchyma cells 

 contain aggregate and prismatic crystals and oval or bean-shaped 

 dark brown tannin bodies. 



Much adulterated, ground olive pits and nut shells being most 

 commonly employed. 



