PLATE XL. 



Chara desmacantha Gr. & B.-W. 



no. 



1. Plant, natural size, from Brittas Lough, Westmeath. 



2. Portion of stem showing cortex, clustered spine-ceUs, stipu- 



lodes and base of whorl. X c 15. 

 3-7. Clusters of spine-cells. X c. 15. 



8. Branchlet-node, ^. X c. 15. 



9. Branchlet-node, $. X c 15. 



10. Oogonium. X c 30. 



11. Oospore. X c 30. 



