Flora of Vermont 16^ 



S. liicidnm Fernald & Eames. Shore of Winooski River, near mouth, 



Burlington, (Blake). 

 S. iniuinnim Fries. Marshy borders of ponds; occasional. 

 S. siinple.x Huds. Marshy borders of ponds and streams; frequent. 



NAJADACEAE. PONDWEED FAMILY 



NAJAS. Naiad 



N. flexilis (Willd.) Rostk. & Schmidt. Slow streams and ponds; com- 

 mon. 



POTAMOGETON. Pondweed 



P. alpimis Balbis. (P. rufescens Schrad.). Windsor, (Jesup) ; Willough- 



by Lake, (E. Faxon) ; Lewis Creek, Ferrisburg, (E. & C. E. 



Faxon) ; Harvey's Pond, W. Barnet, (Blanchard) ; Little Averill 



Pond, (Eggleston). 

 P. aiiierioanns C. & S. (P. lonchites Tuckerm.). In sluggish streams; 



frequent. 

 P. ainplifolius Tuckerm. Common in still water; fruiting more com- 

 monly at high altitudes. 

 P, angnstifolius Berchtold & Presl. (P. Zizii Mertens & Koch). 



Alburg, (Morong) ; Milton, (Grout). Var. coiinecticutensis (Rob- 

 bins) Benn. (P. lucens L., var. Robbins). Lake Dunmore, (E. 



Faxon); Lake Bomoseen, (Eggleston). 

 P. bnpleuroides Fernald. (P. perfoliatus Gray's Manual, ed. 6, in part, 



not L.). Occasional in Lake Champlain. 

 P. ooiifervoides Reichenb. (P. Tuckermani Roltbius). Grout Pond, 



Stratton, (Grout). 

 P. crispiis* L. In shallow water, Lake Champlain and tributaries. 



Malletts Bay, (Griffin) ; Ferrisburg and Charlotte, (Button and 



Kirk). 

 P. dimorplius Raf. (P. Spirillus Tuckerm.). Common. 

 P. epiliydrus Raf. (P. Nuttallii C. & S.; P. pennsylvanicus Willd.). 



Still or flowing water; common. 

 P. epihydnis Raf., var. cayiigeiisis (Wiegand) Bennett. In Winooski 



River, Burlington, (Blake). 

 X P. Faxoni Morong. Abundant in the still water of Lake Champlain 



and tributaries. 

 P. flliformis Pers. (P. marinus auth., not L.?). In Lake Champlain, 



Charlotte, (Button and Kirk) ; West Haven, (Kirk). 

 P. foliosus Raf. (P. pauciflorus Pursh.). Lewis Creek, Ferrisburg, 



(C. E. Faxon) ; W. Barnet, (Blanchard) ; Brattleboro, (Grout) ; 



Woodbury, (Brainerd) ; Burlington and Colchester, (Mrs. N. F. 



Flynn). 

 P. foliosns Raf., var. iiiagarensis (Tuckerm.) Morong. Tributaries of 



Lake Champlain ; occasional. 

 P. Friesii Rupr. (P. mucronatus Gray's Manual, ed. 6, not Schrad.?). 



Frequent. 

 P. heterophjilus Schreb. Still or flowing water; common. Forma 



graniinifoliiis (Fries) Morong. Knight's Island, Lake Champlain, 



