250 POWDERED VEGETABLE DRUGS 



33. (Fig. 52.) CALAMUS. Calamus. 

 Fl. ex. 60. Tinct. 60. 



Sweet flag, E. Kalmuswurzel, G. Acore vrai, Acore odorant, Fr. 



The peeled and unpeeled rhizomes of Acorus Calamus L., Araceae. 

 The unpeeled article takes the preference. 



Unpeeled, light brown. 



Peeled, very light brown. 



Aromatic and camphoraceous. 



Bitter, pungent. 



Parenchymatous tissue with large intercellular spaces, cells thin 

 walled containing very small, simple starch granules; a number of 

 larger cells containing a brownish resin; vascular tissue of porous, 

 reticulate, spiral and annular ducts; some cork tissue; parenchyma 

 immediately below the cork tissue of closely united cells. 



Not generally adulterated. 



