45 



cells, which may or may not cut off sterile cells at their 

 tips. One of the peripheral cells hears laterally the car- 

 pogenic branch, which consists of a basal cell, tv/o inter- 

 mediate cells, and the carpogoniuin v/ith its trichogyne. 

 The intermediate cells and the carpogonitun are disposed in 

 a straight line, which lies at right angles to a line pass;* 

 ing tlirough the basal and the aiixiliary cells . 



A.11 the cells of the procarp 8jre multinucleate e>;cept 

 those of the carpogenic branch. Of these the terminal cell 

 is at an early stage of development binucleate, one of the 

 nuclei passing into the trichogyne and later disintegrat- 

 ing, the other remaining to form the nucleus of the carpogo— 

 nium. The two intermediate cells are uninucleate, and the 

 basal cell of the carpogenic branch is usually binucleate. 

 The connections between the cells of the procarp appear to 

 be similar in general to the connections between neighbor- 

 ing vegetative cells. 



Mention has been made above of the hairs which usually 

 occur in the vicinity of procarps. 



The small size of the trichogyne and of the carpogoni'* 

 uxa renders Griff i thsia Bornetiana a rather unfavorable ob- 

 ject for the study of the details of fertilization, but it 

 has been possible to madze out the essential facts. A cpcr- 

 matium becomes attached to the trichog^Tie near its tip (figs. 



