BOTANY. 233 



POTAMOGETON PERFOUATUS L. 



Painesville, Win. C. Werner; Cleveland (inland lakes), Wm. Krebs. 



POTAMOGETON PRAEEONGTJS Wulf. 



"Northern Ohio, rare," H. C. Beardslee (Cat.) 



POTAMOGETON ROBBINSII Oakes. 



Geauga Co., Dr. Canfield (H. C. Beardslee Cat.); Summit Co., E. Claassen. 



POTAMOGETON SPIRIIXUS Tuckm. 

 Painesville, H. C. Beardslee ( Cat.) 



POTAMOGETON ZOSTERAEFOEIUS Schum. 



"General," J. S. Newberry (Cat); "common," H. C. Beardslee (Cat); Congress 

 Lake ( Stark Co.) , W. L. Crubaugh. 



600. ZANNICHELLIA Michel i. Horned Pond-Weed. 



Zannichellia palustris L. 



"Common," H. C. Beardslee (Cat); Athens, W. A. Kellerman; Cincinnati, Thos. 

 G. Lea ( Cat.), C. B. Going (Jos. F. James Cat.) 



601. NAIAS L. Naiad. 



NaiaS FLExieis ( Willd.) Rost. & Schmidt. 



Painesville, Wm. C. Werner; Silver Lake, Wm. Krebs; Columbus, J. ■ H. 

 Lageman; Cincinnati, Thos. G. Lea (Cat). 



CXXV. Ordkr SPARGANIACE^. Bur-reed Family. 



602. SPARGANIUM Tourn. Bur-reed. 



Spargantum androcladium (Englm.) Morong. (S. simplex androclad.iumUnglxa..) 

 Frequent. 



Sparganium eurycarpum Englm. 

 Frequent. 



CXXVI. Order TYPHACE^. Cat-tail Family. 



603. TYPHA Tourn. Cat-tail Flag. 



Typha algtjstifolia L. 



"General," J. S. Newberry (Cat); Lorain Co., A. A. Wright (Cat; 



Typha latifoeia L. 

 Common. 



