192 VEGETABLE PHYSIOLOGY 
duces. The former is exhibited by Dioncea, the Venus’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. 
Fic, 95.—Luar or 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 
