42 



Proceedings of the Ohio State Academy of Science. 



low during the winter and the Castaha has ahnost been eradicated, 

 possibly thru freezing, or it may be thru the tearing up of the 

 rhizomes. Other portions of the lake, especially the southeast- 

 ern lob'e, still show extensive lily pads. In a protected indenta- 



FiG. 14. — A habit picture of Nelumbo lutea. 



tion of the shore of the main land northwest of the marsh, there 

 is a large patch of an almost pure growth of Nelumbo lutea 

 which extends eastward to the small group of islands fringing 

 the north shore of the bog. At the outer margin of the Nelumbo 



