INTRODUCTION. 



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cells which adjoin the female organ, so that this latter becomes surrounded by 

 an envelope h. A sporocarp is thus formed, the fertilised oosphere of which 

 produces out of its contents after a certain period of rest a mass of tissue, all 

 the cells of which produce zoospores, and each of these gives rise to a plant of 



Fig. 164.— Various forms of carpogfonia, and of sporocarps resulting from them ; iv the female organ before fertilisation ; 

 ttt the male organ; y the entire sporocarp; h its envelope; cs the spores; A Coleochate; B Characea ; C Netnalion; 

 D Lejolisia ; E Podosphcera ; F Ascobolus (after various authorities). 



ie same kind. The sporocarp of the Coleochaeteae combines the most essential 

 characters of an oospore with those of the sporocarp of the Florideae and of some 

 Fungi. As respects an alternation of generations, the oosphere surrounded by its 

 envelope, together with the tissue which subsequently fills it up and which produces 



