76 



is as a rule composed of four cells : three cells and the carpo - 

 gonium with a rather long thin trichogyne (Fig. 77 a). After 

 fertilization the carpogonium is divided by a transverse wall 

 into a basal cell, which as is the case in N emotion and Hel- 

 minthora, remains undivided, and an upper cell. This cell is 

 firstly divided by a more or less vertical wall into two cells, 

 after which variously orientated walls arise (Fig. 79 &, c, d), the 



Fig. 80. Liagora pinnata Harv. Cystocarps. a, with sur- 

 rounding filaments, b, showing carpospores. (a, about 



60: 1, b, 150:1.) 



result of which is a cluster of irregularly bent, ramified filaments 

 (Fig. 80 a). These are the sporogenous filaments whose cells at 

 the end of the filaments produce the carpospores (Fig. 80 b). 

 When ripe these are oval or obovate, about 

 15 fjt broad and 18// long. 



As a secondary result of fertilization 

 sterile filaments begin to grow out from the 

 cell immediately below the cell in the assi- 

 milating branch upon which the carpogonial 

 branch is found. These filaments grow up 

 round the cystocarp forming a kind of co- 

 vering about it but only very loose and im- 

 perfect (Fig. 80 a). 



The antheridia (Fig. 81) are found in the 

 same plant as the carpogonial branch and 

 often in the same assimilating filament (Fig. 

 77 a). They are placed at the summit of short branchlets grow- 

 ing out from one of the cells somewhat below the top of the 

 assimilating filaments (Fig. 77 b}. From the upper end of these 

 branchlets ramified filaments, consisting of rather short cells grow 

 out forming dense, nearly hemispherical clusters. The terminal 



Fig. 81. Liagora pin- 

 nata Harv. Antheri- 

 dia. (About 170: 1). 



