620 REPORT OF STATE GEOLOGIST. 



NAIADACE.E. Pondweed Family. 



POTAMOGETON L. 



P. natans L. Common Floating Pondweed. 



Throughout the State in ponds, the shallow waters of lakes and 

 in sluggish streams. 



Flowers in July and August. 



Vigo (Blatchley) ; Steuben (Bradner). 



P. amplifolius Tuckerm. Large-leaved Pondweed. 



Reported only from northern counties as growing in the inland 

 lakes in quiet bays. 



Flowers from July until in September. 

 Lake (Hill); Hamilton (Wilson). 



P. pulcher Tuckerm. Spotted Pondweed. 



Northern counties, in ponds and pools about lakes. Detected as 

 a member of the State flora by E. J. Hill. 

 Flowers in July. 

 Lake (Hill). 



P. Nuttallii Cham, and Sch. 



(P. Pemuijlv aniens Cham.) 

 In ponds and streams throughout the State, apparently more 

 abundant in the southern counties. 

 Flowers in June and July. 

 Steuben (Bradner) ; Gibson. 



P. lonchites Tuckerm. Long-leaved Pondweed. 



Throughout the State in ponds and sluggish streams. Plentiful 

 in the stations from which it is reported. 

 Flowers from July through September. 

 Gibson (Schneck) ; Lake (Hill). 



P. heterophyllus Schreb. 



Reported only from the extreme northern and southern counties, 

 but doubtless occurring in all parts of the State. A very variable 

 and puzzling species. 



Flowers from July until September. 

 Steuben (Bradner) ; Lake (Hill). 



