232 GEOLOGY OF OHIO. 



CXXII. Order JUNCAGINACE.E. Arrow Grass Family. 



597. TRIGLOCHIN L. Arrow-Grass. 



Trigmkhin maritima L. . 



Franklin Co., W. S. Sullivant (Cat. 1840); Cedar Swamp (Champaign Co.) Wm. 



C. Werner. 



Trigi,ochin palustris L. 



Franklin Co., W. S. Sullivant ( Cat. 1840.) 



598. SCHEUCHZERIA I/. 



SCHEUCHZERIA PAI,USTRIS L. 



Lorain Co., A. A. Wright (Cat); Licking Reservoir, Wm. C. Werner. 



CXXIII. Order POTAMOGETONACE^E. Pond-weed Family. 

 599. POTAMOGETON L. Pond-Weed. 



POTAMOGETON AMPUFOUUS Tuck. 



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



PoTamogeton foijosus Raf. (P. pauciflorus Ph.) 

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



PoTamogeton heterophyiaus Schreb. 



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



POTAMOGETON HETEROPHYU,US MAXIMUS Morong. 

 Painesville, Wm. C. Werner. 



PoTamogeton DivERSiFoiduS Raf. [P. hybridus Mx.) ' 

 Painesville, H. C. Seardslee ( Cat.) 



POTAMOGETON LONCHITES Tuckni. 



"General, Northern Ohio," H. C. Beardslee (Cat.); Painesville, Wm. C. Werner 



POTAMOGETON LUCENS L. 



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



POTAMOGETON NATANS L. 



Common. 



PoTamogeton numaiaii Cham. & Schl. ( P. pennsylvanicus Willd.) 

 " General," H. C. Beardslee ( Cat.) 



PoTamogeton obtusifowus Mert. & Koch. 

 Lorain Co., A. A. Wright (Cat.) 



POTAMOGETON PECTINATUS L. 



Not uncommon. 



