40 SANDUSKY FLORA. 



MONOCOTYLEDONES. 



TYPHACE^E. 



SPARGANIUM, Tourn, Bur reed. 



S. androcladum. Engelm. 



Lake marshes. Middle Bass. 

 S. eurycarpum, Engelm. 



Lake marshes. Middle Bass. 

 S. simplex, Huds. 



Southern Florence, Shinrock. 



TYPHA, Tourn. 



T. augustifolia, L. 



Castalia stream, Portage River and North Bass; 



scarce. 

 T. latifolia, L. Common Cat-tail. 



Common. 



NAIADACEAE, 



NAIAS, L., Naiad. 



N. flexilis, Rostk, and Schmidt. 



Common. 

 N. flexilis robusta, Morong.* 



Infrequent. 



N. GRACILLIMA, A. Br.* 



"Portage River" A. J. Pieters. 



POTAMOGETON, Tourn. Pond weed. 



P. amplifolius, Tuckerm, Deep water; infrequent. 

 P. foliosus, Raf. 



East Harbor, Put-in-bay, North Bass ; mostly in 



shallow water. 

 P- foliosus niagarensis, (Tuckerm.) Morong.* 



North Bass and small streams in Erie County, 



especially Mills Creek. 



