BOTANY. 233 



POTAMOGETON PERFOUATUS L. 



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



POTAMOGETON PRAEVJNGUS Wulf. 



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



POTAMOGETON ROBBINSII Oakes. 



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



Potamogeton SPiRrrxus Tuckm. 

 Painesville, H. C. Beardslee ( Cat.) 



POTAMOGETON ZOSTERAEFOUUS Schum. 



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

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



600. ZANNICHELLIA Micheli. Horned Pond-Weed. 



ZaNNICHELXIA 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 flexius ( Willd.) Rost & Schmidt. 



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

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



CXXV. Ordkr SPARGANIACE^E. Bur-reed Family. 



602. SPARGANIUM Tqurn. BUR-REED. 



Sparganium androcladium (Englm.) Morong. {S. simplex androctadium TSnglm.) 

 Frequent. 



Sparganium eurycarpum Englm. 

 Frequent. 



CXXVI. Order TYPHACE^E. Cat-tail Family. 



603. TYPHA Tourn. CaT-taii, . Flag. 



Typha augustifolia L. 



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



Typha latifolia L. 

 Common. 



