410 POWDERED VEGETABLE DRUGS 



134. (Fig. 134.) MATICO. 



Fl. ex. 30. 



Matico, E. G. Fr. 



The leaves of Piper angustifolium L., Piperacese. 



Brownish green. 



Faintly aromatic, recalling chamomile. 



Somewhat pungent and bitterish. 



Epidermal cells above and below polygonal; upper much larger, 

 vertical walls thicker. Stomata on lower surface only. Simple, three 

 to five celled, thick-walled trichomes, somewhat widened at the trans- 

 verse septse. A hypoderm of a single layer of tangentially flattened 

 cells. Resin glands in the leaf parenchyma. 



Adulterated with leaves of related species and leaves of other 

 plants which all differ considerably histologically. Compare trichomes. 



135. MATRICARIA. German Chamomile. U. S. 

 Fl. ex. 30. 



Kamillenblumen, G. Fleurs de camomille commune (d'Allemagne), 

 Fr. 



The flowering heads of Matricaria Chamomilla L., Composite. 



Greenish. 



Fragrant, chamomile odor. 



Bitter. 



Epidermal cells with sinuate vertical walls; abundant collapsed 

 parenchyma tissue; very porous tracheid-like cells. No starch. The 

 pollen grains with prominent conical projections and three pores form 

 the most marked microscopical characteristic of the powder. The 

 glandular trichomes are usually so much collapsed as to be unrecog- 

 nizable. 



Ash 10 per cent. 



Adulterated with flowers of Anthemis arvensis, Maruta cotula and 

 other related plants. Compare with Roman chamomile. 



