170 



THE AMERICAN MONTHLY 

 The Structure of Buchu Leaves. 



[Oct. 



B. BETULiNA. — The leaves vary from 1-2 to 3-4 inch in 

 length, and from 1-3 to 1-2 inch in width, in the upper 

 part. In shape they are obovate, cuneate below, some- 

 what undulate, and recurved at the apex (fig. A and a) 

 glabrous and minutely wrinkled, with a polished surface, 



denticulate at the margin, furnished with scattered oil 

 cells, one occurring also at the base of each tooth and in 

 the obtuse apex. The odor is characteristic, recalling a 

 mixture of peppermint and black currant. 



B. CRENULATA. — The leaves are oblong-oval or elliptical 

 (fig. Band b) obtuse or somewhat rhomboidal, varying 

 from J to li inch in length and from i to J inch broad in 

 in the middle. The surface is glabrous, polished and 



