506 POWDERED VEGETABLE DRUGS 



191. (Fig. 184.) STRAMONIUM. Stramonium Leaves. 



U. S. 



Fl. ex. 30. 



Thornapple, E. Stechapfel, F. Stramoine, Fr. 



The leaves of Datura Stramonium L., Solanaceae. 



Bright green. 



Heavy, nauseous. 



Bitter. 



Vertical walls of epidermal cells wavy, those of lower epidermis 

 more markedly so. Stomata above and below. Simple, three to six 

 celled, rather large and thin-walled trichomes with warty cuticular 

 markings Glandular trichomes. Long palisade cells, spongy tissue 

 cells with aggregate crystals of calcium oxalate. Prismatic crystals are 

 found in leaf stalk and vascular bundles. 



Ash 20 per cent. 



Compare with leaves of belladonna and hyoscyamus. 



192. STRAMONIUM. Stramonium Seeds. 

 Fl. ex. 30. Tinct. 40. 



Names and origin as for 191. 



Very dark brown. 



Heavy, nauseous; rancid when old. 



Bitter. 



Epidermal cells quite large, somewhat rectangular in form, brownish 

 in color, walls greatly thickened with numerous branching pores; 

 outer walls wavy, producing warts and ridges as seen in lateral views. 

 Endosperm cells polygonal, thick-walled, but not distinctly porous, 

 bearing crenate aleuron grains and fat. Concentrated sulfuric acid 

 colors the powder deep red. 



