NOTES ON DIPTEROCABPS. 

 Twice i-otvledons, folded into an v . were found. 



6T 



Eigure 116, a seedling of H::n Cur:i:ii. § nat. size : figure 117. its outer 

 sotyledon f rom outside: figure 118, from inside: figure 119, the placentar 



cotyledon from the side towards the outer cotyledon : and figure 120, from the 

 ether side, all J 2 nat. size. 



The attention of the reader may be called to faint grooves on 

 the surface of the cotyledons, which are due to raised lines in the 

 fruit wall. The splitting of the fruit wall as the seed gerrninates 

 is between these raised lines, or may rarely cross one or two of 

 them, not being along any definite line of - nee. but apparent- 



ly along any weak line upon which the cotyledons in their effort to 

 flatten themselves press most. Therefore that the fruit of such 

 Dipteroearps as Vatica, should usually free its seedling by splits 

 along three lines is not To be assumed as connected with the tri- 

 locular nature of the ovary in the order, unless and until microscopic 

 examinanon of successive stages ::. the devei ►pment of the fruit 

 has shown it to be so. B> ' odendro frequently spliTs into two 

 only; and in Shorea sericea, two and four splitt _~ were found not 

 infrequently. 



Shokea. 



Shorea in several species exhibits grooves on the embryo such 

 as those to which attention has just been called under Hopea Cur- 

 tisii. They are particularly obvious in Shorea costata, King. 



Figure 121 is its embryo with The radicle remote from the 

 observer, and 122 is the sain- from The side with the placentar coty- 

 ledon Towards The observer. As in Hopea Curiisii The outer coty- 

 ledon is The larger and shuts The placentar cotyledon out from the 

 apex of the ovary. 



Figure 121, the embryo of S 

 observe; figure 122. the same 

 : c serve. I nat. size. 



No. 



wea costata with the radicle away from the 

 with the placentar cotyledon towards the 



