ACONITE. 



143. 



hence a uniform size in the powder is not to be expected. 

 The cells are mainly rounded, and the walls are some- 

 what thickened and coUenchymatic, especially near the 

 epidermis; the parenchyma inside of the endoderm is 





Fig. 35. — Powdered Aconite. 

 T, Tracheid; V, pitted vessel; S, starch; ST, Sto, stone cells; H, 

 hairs; P, Par. parenchyma; EN, endodcrmis; WP, wood parenchyma; 

 Sp V, spiral vessel; E, epidermis. 



richly pored. The cells of the epidermis are usually 

 light-brown in color, thin- walled, and are not character- 

 istic. Occasionally a few epidermal hairs are seen. 

 These come from the lower part of the tuber or from the 



