XOTES OX DIPTEEOCAEPS. 



65 



160 

 (59 

 152 



58 

 51 

 50 



60 

 55 

 50 



52 

 52 

 40 



In figure 97 the reader well observe that the outer cotyledon 

 does not embrace the placentar cotyledon at all. The genesis of 

 the ridges of the placentar cotyledon will be observed also, the 

 grooves which separate them being creases arising in the curling of 

 the thick cotyledon. The outer cotyledon through life remains the 

 smaller (vide figure 102), and its petiole is about 1 mm. shorter. 



Figure 103 and 104, the embryos 

 of two fruits with twin seeds ; the 

 placentar cotyledon is the inner in 

 both cases and is not curved. The 

 ovules which gave rise to the seeds 

 were of different loculi. 



Figure 105, a vertical section 

 through a fruit of Anisoptera Curtisii 

 with twin seeds in separate loculi, 

 with the placenta between them 

 and showing its curious process into 

 the seeds, nat. size. 



In Anisoptera Curtisii I found twin seeds to be frequent; 

 figures 103, 104 and 105 illustrate them. When twins were present 

 they were as far as seen in different loculi. Then the placentar 

 cotyledon would be unfolded as the drawings show. Into it a 

 process of placentar tissue runs, whicli gelatinises at the maturity 

 •of the seed, and seems to be homologous with the apron like process 

 described above as found in Dryobalanops. 



The seedlings of Anisoptera costata and A. Curtisii do not 

 -develop in their tissues red pigment. 



Balanocarpus section Eichetia. 



Balanocarpus penangianus,. King, is a very common tree on 

 the hills of the Island of Penang; and in 1918 it fruited very freely. 

 The fruit is as drawn in figure 106. Its radicle commences to 

 protrude before any distinct cracks spread down the fruit wall. 

 Figure 110 is the embryo, seen with the radicle remote from the 

 observer, and figures 107, 108 and 109 are sections through it 

 at different levels. 



R. A. Soc, No. 81, 1920. 



