704 



AQUATIC PHYCOMYCETES 



Fig. 49. Sexual reproduction in Monoblepharis 



A-D. Method of development of sex organs in Monoblepharis polymorpha 

 Cornu : A, terminal antheridium cut off by basal cross wall; B, same, showing 

 beginning of formation of oogonial rudiment beneath antheridium; C, further 

 expansion of oogonial rudiment; antherozoids have matured and are about 

 to be discharged; D, nearly mature oogonium, now separated by basal cross 

 wall from hypha; antherozoids have been discharged from antheridium, 

 which appears to be placed on oogonium. E-G. Method of development of 

 sex organs in Monoblepharis hypogyna Perrott : E, oogonial rudiment forming 

 terminally on hypha; F, nearly mature oogonium cut off by basal cross wall: 

 a cylindrical section immediately beneath, the antheridial rudiment, has been 



