306 POWDERED VEGETABLE DRUGS 



69. (Fig. 79.) COLOCYNTHIS. Colocynth. U. S. 

 Fl. ex. 30. Tinct., coarse powder. 



Bitter apple, E. Koloquinten, G. Coloquinte, Fr. 



The fruit (peeled and freed from seeds) of Citrullus Colocynthis 

 Schrader, Cucurbitaceae. 



Very light yellowish brown. 



Odorless. 



Extremely bitter. 



Parenchyma cells very large, thin walled; typical sclerenchyma 

 cells; no characteristic cell contents; vascular tissue sparingly present. 

 Parenchyma cells all broken and collapsed. 



Ash should not exceed 14 per cent. 



Powders made from fruits carefully peeled and freed from seeds 

 should show only a very small amount of yellowish epidermal tissue 

 and colorless sclerenchymatous cells of the seeds. 



