PLATE VIII. 



Nitella flexilis Agardh. 



FIG. 



1. Plant, natural size, from Wimbledon Common, Surrey. 

 2, 3. Apices of dactyls, x c. 40. 



4. Branchlet-node with antheridium and oogonium. x c. 20. 



5. Mature oogonium after shedding coronula. x c. 20. 



6. Oospore. x c. 40. 



