354 



SCIENTIFIC AND APPLIED PHARMACOGNOSY 



The flowers of a species of Inga (Fam. Leguminosae) are frequently 

 present. The pedicel is about 2 mm. in length ; the calyx yellowish- 

 brown, about 1 cm. in length, 5-toothed, pubescent; corolla cylin- 

 drical, or somewhat funnel-shaped, 5-toothed, about 1 cm. in length, 



FIG. 155. Transverse section of coca leaf near the midrib: U, upper epidermis; 

 P, palisade cells, some of which contain monoclinic prisms of calcium oxalate; 

 M, loose parenchyma, some of the cells of which also contain monoclinic 

 prisms of calcium oxalate; L, lower epidermis with distinct papillae; CA, 

 monoclinic prism of calcium oxalate; SF, sclerenchymatous fibers; T, 

 trachea?; S, sieve. 



yellowish-brown, very pubescent; stamens numerous, more or less 

 united into a tube exserted; filaments reddish-brown. 



Inner Structure. See Fig. 155. 



Powder. (Fig. 156.) Dark green, fragments of epidermal tissue 

 of more or less polygonal cells and elliptical stomata, the latter usually 

 with two neighboring cells; papillae of under surface appear as cir- 



