270 



BOTANY AND PHARMACOGNOSY. 



small, the two posterior or upper ones which are hooded and 

 concealed in the helmet-shaped sepal are nectar-secreting (Fig. 

 84, E). The fruit is a follicle and contains numerous small seeds. 



Fig. 141. Acomtum Napellus . A, one of the Icng-petiolate, divided leaves: B, epi- 

 dermal cells of lower surface; c, an epidermal cell of the upper surface; D, transverse sec- 

 tion through one of the principal veins showing two fibrovascular bundles, ^d strongly 

 collenchymatic cells beneath the lower epidermis, E. one of the few hairs from the petiole; 

 F, lignified bast fibers surrounding the sieve in the petiole; G. longitudinal section through 

 .fibrovascular bundle showing spiral and reticulate trachea; (t), bast fibers (b) and some 

 of the collenchyma cells (c), those at the left exhibiting longitudinal pores which give 

 a crystal-like effect. 



Delphinium Sfaphisagria. which yields staphisagria (p. 427) 

 or stavesacre, is a handsome, tall, biennial larkspur, with dark 

 green, palmate, 5- or 7-lobcd leaves, and blue or purplish flowers 



