NOTES ON DIPTEKOCABPS. 



61 



Figure 69, the seedling of Bala- Figures 72, section of the em- 



nocarpus zeylanicus, \ nat. size ; bryo through the upper part of th& 



figure 70, its plaeentar cotyldon seen cotyledons; figure 73, section through 



from the side away from the outer the plumule ; and figure 74, section 



cotyledon ' figure 71, the outer coty- through the radicle, 

 ledon seen from the outside, nat. size. 



Trimen (Handbook to the Flora of Ceylon, i, 1893, p. 130), 

 doubted if he had classified it rightly as a Balanocarpus. 



Vatica. 



With Vatica nitens another type of Dipteroearp embryo is 

 reached. In it the plaeentar cotyledon is rolled rather then folded, 

 and the outer cotyledon embraces it (vide figure 75). The plaeentar 

 cotyledon is horned as figures 76, 79 and 80 show. . The revolution 

 of the plaeentar cotyledon suggests Dipterocarpus. 



65. 



f 



Figure 75, the embryo of Vatica 

 nitens with the radicle away from 

 the observer. 



Figure 76, the young seedling of 

 Vatica nitens with the plaeentar coty- 

 ledon towards the observer ; figure 

 77, the outer cotyledon from the 

 outside ; figure 78, from the inside ; 

 figure 79, the plaeentar cotyledon 

 from the side toward the outer coty- 

 ledon and figure 80, from the other 

 side, £ nat. size. 



Red pigment is plentifully present in the cotyledons. Several 

 seedlings of this species were found in which the cotyledons had 

 been bent into an S. 



B. A. Soc, No. 81, 1920, 



