51 



The reticulated vessels occurring in connection with the bast 

 fibres are also a help to recognition. These are long and rounded 



Figure 45 

 Fig. 45. Ginger. (1) Starch grains; (2) Bast fibres and (3) reticu- 

 lated vessels. 



in cross section, usually have pointed ends, and vary more in 

 size than do the bast fibres. (Fig. 45.) 



LICORICE. 



{Glycyrrhiza glabra arid var.) 



Licorice is said to occur sometimes in condimentals and when 

 found in any quantity may be recognized by the odor and taste 

 which is quite characteristic. There are, however, no particular 

 cell characteristics which would be of aid to a rapid diagnosis. 

 The color of the powder is light yellow, with a somewhat sweetish 

 odor and slightly acrid taste. This substance is not of general 

 occurrence, however. In addition to variety glabra there are 

 other varieties used which differ somewhat in structure and com- 

 position, the details of which are unnecessary to the diagnosis. 

 The appearance, odor and taste are the best aids to the diagnosis 

 of this product when found in condimentals or condition powders. 



LOBELIA. 



{Lobelia inflala.) 



This drug is made up of the ground stem, top leaves and 

 flowers of the plant. In color the powder is dark green and pos- 



