88 Mr. Griffith on the Development of 



and its partial destruction, with the course of the lateral shoot, are 



visible. 

 Fig. 5. Young plant of a Loranthus attached to a stock. 

 Fig. 6. Ditto. Longitudinal section of the conical base of its axis, together 



with that of the stock, the bark removed. 

 Fig. 7. Portion of a lateral shoot of an adult Loranthus, with a corresponding 



portion of a stock, showing their mode of adhesion. 

 Fig. 8. Portion of the same cut through longitudinally, showing that the 



sucker has pierced the bark and become applied on the surface of 



the wood of the stock. 



Tab. IX. 



Fig. 1,2 & 3. Different sizes of parasites and stocks cut through longitudi- 

 nally, showing that however varied the surface of the woody system 

 of the stock may be to which the parasite is applied, there is no 

 mutual communication between the two systems. In other words, 

 the woody systems of the stock and parasite are contiguous, and not 

 continuous. 



Fig. 4. Longitudinal section of two lateral roots of Loranthus Scurrula, show- 

 ing that these not only become occasionally attached by " suckers," 

 but that when this does take place, there is an actual, although par- 

 tial, union between their woody systems. 



EXPLANATION OF THE PLATES OF VISCUM. 



Tab. X. 



Fig. 1. Longitudinal section of an ovarium before the expansion of the flower. 

 a. Parietes of the calyx, h. The canal running from the centre 

 of the stigma through the upper part of the ovarium, and termina- 

 ting in the cavity d. 



c. Ovarium of the same structure with the calyclne tissue, c, a. 



