192 



VEGETABLE PHYSIOLOGY 



daces. The former is exhibited by Dioncea, the Yenus's 

 fly-trap ; the latter by the different species of Drosera (the 

 Sundews) . 



Drosera is a small plant which is found growing upon a 

 substratum of bog-moss (Sphagnum). Its dimensions are 

 small, the plant not being more than a few inches in height. 





a. 95. LEAP OF Drosera, SHOWING THE GLANDULAR TENTACLES. 



It bears a rosette of leaves, from the middle of which rises a 

 single scape of flowers. The leaves are covered with stalked 

 glands (fig. 95), which stand out from the surface. Each 

 gland has a somewhat substantial stalk, containing a rudi- 

 mentary vascular bundle. At the top of the stalk is a 

 rounded head which is always covered by a viscid secretion 

 that it pours out. From the shining appearance of the 



