334 POWDERED VEGETABLE DRUGS 



87. (Figs. 93 and 94.) EUONYMUS. Euonymus. 

 Fl. ex. 60. Extract 30. 



Wahoo, Spindle tree, Burning bush, E. Spillbaumrinde, Spindel- 

 baum, Pfaffenbliithen, G. Ecorce de fusain (de bonnet de pretre), Fr. 



The root bark of Euonymus atropurpureus Jacquin, Celastrineae. 



Light brown. 



Nearly odorless. 



Sweetish, bitter, pungent. 



Rather thin- walled medium sized parenchyma with simple spherical 

 starch granules and aggregate crystals of calcium oxalate. Ducts 

 and tracheids from the wood; cork tissue. 



Ash of stem bark 11 per cent. 



Ash of root bark 12 per cent. 



The stem bark (Fig. 93) can be distinguished readily by absence of 

 starch; presence of typical bast fibers, and numerous larger crystals 

 of calcium oxalate. 



Fig. 93. EUONYMUS. Stem Bark. 



a. Parenchyma with large aggregate crystals of calcium oxalate. 

 6. Typical thick-walled porous bast. 



c. Cork. 



d. Phloem bast shown in transverse section (e). 

 f. Crystal. 



