196 Conservation Department j 



Potamogeton filiformis Pers. j 



Near shore, Buffalo harbor. ^' 



Potamogeton foliosus Raf. c 



Among Scirpus acutus about Strawberry island. 

 Potamogeton gramineus L. var. graminifolius Fries. 



Common in the outer zone of vegetation. Niagara river ; Buffalo ! 

 harbor; Dunkirk harbor. 

 Potamogeton lucens L. i 



In deep swift running water. North of Buckhorn island, 

 Niagara river. 

 Potamogeton natans L. Floating Pondweed. 



In several small bays along Grand island. I 



Potamogeton pectinatus L. Sago Pondweed. 



One of the most common species of Potamogeton. * 



Potamogeton pusillus L. 



Frequent in the Niagara river ; Dunkirk ; Sturgeon point. 

 Potamogeton vaginatus Turcq. '■ 



In deep water north of Buckhorn island, Niagara river. 

 Potamogeton Richardsonii (Benn.) Rydb. 



The most prominent Potamogeton in the Niagara river and Lake 

 Erie. 

 Najas flexilis (Willd.) Rostk. and Schmidt. Naiad. ] 



Frequent. Dunkirk harbor; Buffalo harbor; Niagara river. 

 Zannichellia palustris L. var. major (Boen.) Koch. Horned 

 Pondweed. 



Infrequent. Dunkirk harbor; Niagara river l)elow Lewiston. 



Alismaceae ?| 



Sagittaria heterophylla Pursh. Arrow-head. 



Common in the outer zone of emersed plants. Tonawanda 

 channel of Niagara river; Dunkirk harbor. 

 Sagittaria latifolia Willd. Arrow-head. • 



Common in tlie upper Niagara river. j 



Sagittaria latifolia Willd. var. obtusa (Mulil.) Wiegand. Arrow- 

 head. 



Along shore, Dunkirk harbor. 



Hydrocharitaceae 



Elodea canadensis Miclix. Water-weed. 



Common in several protected bays along the Grand island side 

 of Tonawanda channel; infrequent elsewhere. 

 Vallisneria americana Michx. Eel-grass. 



The most common aquatic plant of the region. 



Gramineiae 



Spartina micheauxiana Ilitchc. Slough Grass. 

 On sandbars about Strawberrv island. 



