138 

 Order 93. Typhace^. 



407. TYPHA, Tourn. 



909. T. latifolia, L. 



910. T. angustifolia, L. 



Rare. At Whirlpool, Niagara R., American side, Clinton. 



408. SPARGANIUM, Tourn. 



911. S. eurycarpum, Engetm. 



912. S. simplex, Hudson, var. Nuttallii, Gray. 



Rather rare. Squaw Is., Niagara R. 



Order 94. Naiadace^e. 



409. NAIAS, L. 



913. N. flexilis, Rostk. 



410. ZANNICHELLIA, Micheli. 



914. Z. palustris, L. 



In a pond near Ft. Porter, Buffalo; Niagara R., Clinton. 



411. POTAMOGETON, Tourn. 



915. P. natans, L. 



Rather rare. Niagara R., near Strawberry Is., Clinton. 



916. P. hybridus, Michx. 



Rare. Black Cr. , Ont., Clinton. 



917. P. gramineus, L., var. heterophyllus, Fries. 



918. P. lucens, L. 



Not common. Niagara R.; Lime Lake, Machias, Catt. Co., 

 Clinton. 



919. P. praelongus, Wulfen. 



920. P. perfoliatus, L. 



921. P. compressus, L. 



922. P. Niagarensis, Tuckerman. 



Rare. '' Rapids above Niagara Falls, Tuckernian." (Gray's 

 Manual.) Not detected by us. 



923. P. pauciflorus, Pursh. 



924. P. pusillus, L. 



925. P. pectinatus, L. 



926. P. Robbinsii, Oakes. 



Order 95. Alismace^e. 



412. TRIGLOCHIN, L. 



927. T. palustre, L. 



Rather rare. Lake shore, near Ft. Erie, Out.; Strawberry Is., 

 Niagara R., Clinton. 



