242 ON SEEDLINGS 



DIPTEROCARPE.E. 



Benth. et Hook. Gen. PI. i. 189. 



Fruit and Seed. The ovary is generally three-, rarely two- 

 or one-celled as in Ancistrocladus and Lophira, the former 

 having one ascending ovule and the latter eight to twelve erect 

 ovules from a short central placenta. In all other cases the 

 ovules are gemmate in each cell, pendulous and anatropous or 

 inserted on the placenta by their sides and subanatropous with 

 a ventral raphe and superior micropyle. Almost the same 

 variability is met with as amongst the Ternstrcemiacese. The 

 fruit is free or enclosed in the enlarged persistent tube of the 

 calyx as in Dipterocarpus, two out of the five lobes of which 

 form wings of considerable size, while the other three remain 

 small. A third form is met with in Ancistrocladus, Anisoptera, 

 and Pachynocarpus. The mature fruit contains one, rarely 

 two, seeds, and dehisces very slowly or not at all. The seeds 

 are large, pendulous, and anatropous, rarely erect ; they are 

 exalbuminous. 



The embryo is always large, and, when the cotyledons are 

 thick and fleshy, it conforms to the seed. It varies greatly, 

 however, in different genera. The cotyledons are equal, or 

 unequal and straight, or lobed and plaited. In some cases 

 they are thin, and in the effort to fill the seed become thrown 

 into remarkably twisted or corrugated folds. The radicle 

 points to the hilum and is slightly exserted, or in other cases 

 elongated, but included between the cotyledons. 



CHL.ENACE.E. 



Benth. et Hook. Gen. PL i. 194. 



There are but eight species in this Order, distributed 

 amongst four genera, and all are natives of Madagascar. The 

 three-celled ovary contains two pendulous or in a few cases 

 horizontal anatropous ovules. The fruit is a capsule, nearly 



