TAXONOMY 
245 
ceptacles. Within these conceptacles the antheridia , or male sexual 
organs, and the archegonia, or female sexual ogans, are produced. 
The conceptacles also contain numerous branching filaments called 
Fig. 121.— Fuchs vesiculosus. Section of a female conceptacle. o, osteole 
by which the eggs escape. The oval shaped dark objects represent oogonia in 
different stages of maturity*(highly magnified). 
paraphysesj which arise from the cells lining the cavities. The an¬ 
theridia are found as outgrowths of these paraphyses and produce 
sperms or male sexual cells. The oogonium is a large, globular, 
Fig. 122 .—Fucus vesiculosus. Fertilization. A, egg approached by bi- 
ciliated sperms; B, sperms attached to egg and surrounding it prior to fertiliza¬ 
tion (highly magnified). .... 
stalked cell and produces eight eggs, each of which is a female sexual 
cell. The eggs and sperm escape into the sea water. The eggs 
float and are surrounded by myriads of sperms. One sperm, only, 
