PLATE XXXIII. 



Chara contraria Kiitzing. 



PIG. 



1. Plant, natural size, from HickKng Broad, E. Norfolk. 



2. Portion of stem, showing cortex, spine-cells, stipulodes and 



base of whorl. X c. 30. 



3. Transverse section of stem. X c. 30. 



4. Apex of branchlet with several ecorticate segments. X c. 



25. 



5. Apex of branchlet with ultimate node and two ecorticate 



segments. X c. 25. 



6. Fertile branchlet-node. X c. 30. 



7. Oogonium. X c. 40. 



8. Oospore. X c. 40. 



9. Var. hispiduh, Braun. Portion of stem showing cortex, 



elongated spine-cells, stipulodes and base of whorl. 

 X c. 25. 



