PLATE XL 



Nitella translucens Agardh. 



FIG. ' 



L Plant, two-thirds natural size, from Loughton, S. Essex. 



2. Apex of sterile branchlet. x c. 20. 



3. Portion of fruiting head, x c. 15. 



4. Oogonium, x c. 20. 



5. Oospore, x c. 40. 



