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SCIENTIFIC AND APPLIED PHARMACOGNOSY 



seeded. Seeds carnpylotropous, somewhat reniform, flattened, light 

 brown; testa finely pitted, with a curved embryo embedded in the 

 endosperm; odor distinct, heavy; taste somewhat disagreeable. 





FIG. 243. Plants from 300 large belladonna seeds seven weeks after sowing, 

 showing the unequal development of seedlings. After Sievers, Amer. Jour. 

 Pharm., 1914, p. 494. 



Inner Structure. (Fig. 245.) Leaves bifacial; both the lower 

 and upper epidermis consist of cells, having thin undulate walls, 

 stomata and hairs, these latter being more abundant on the dorsal 

 surface; a layer of short palisade cells; a crystal layer composed of 

 parenchyma, the nearly isodiametric cells being filled with sphenoidal 

 microcrystals; several layers of loose mesophyll, among which are 



