Kerr — Dlschidia rafflesiana and Dischidia nummularia. 309 



PLATE XXVII. 



A young plant of Dischidia rafflesiana growing on the trunk of Melanorrhcea 

 udtata, Wall. ; the flat leaves first formed are seen below the pitchers ; 

 near the lower end of the plant is a lateral branch with two very young 

 pitchers ; some of the pitchers and flat leaves have been partially eaten, 

 probably by a caterpillar : in particular one small imperfect pitcher, 

 the first formed, is nearly destroyed ; there were large numbers of 

 Iridomyrmex in these pitchers. 



PLATE XXVIII. 



Dischidia nummularia growing on the trunk of Metragyna hirsuta, Hav. This photo- 

 graph shows how closely the leaves lie, forming a very good protection 

 to the nests of Iridomyrmex. 



PLATE XXIX. 



Dischidia rajflesiana growing on Eugenia fruticosa, Roxb. This gives a good general 

 idea of the habit of the plant and the random position of the pitchers ; 

 some of the twining shoots still carry foliage leaves. 



PLATE XXX. 



Dischidia rafflesiana, pitchers and twining shoots with foliage leaves ; round the 

 bases of the pitchers is a quantity of ant-nest-material in which 

 seedling-plants are growing. 



PLATE XXXI. 



Dischidia rafflesiana, two pitchers with one side of each removed ; the origin of the 

 dorsal, or pitcher, root from the stem is seen in the right-hand figure ; the 

 ventral root is better seen in the left-hand figure ; the ant-nest-material 

 is built up round the pitcher-rootlets. Both of these pitchers are rather 

 young, and the branching of the roots within the pitcher has not reached 

 its full development, nor is there as much nest-material as there often is 

 in older pitchers. 



SCIENT. PEOC. K.D.S., VOL. XIII., NO. XXIV. 8 B 



