42 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Potamogeton heterophyllus Schreb. (various-leaved). 



Occasional or local. Ponds and either slow or swift flow- 

 ing streams. July — Aug. 



The forma graminifolius (Fries) Morong (grassy- 

 leaved) occurs at Lake Saltonstall (O. D. Allen). The forma 

 longipedunculatus (Merat) Morong (long-stalked) has 

 been found at Selden's Cove, Lyme (Graves). The forma 

 MYRIOPHYLLUS (Robbins) Morong (myriad-leaved) occurs 

 at Lake Saltonstall (O. D. Allen), and Twin Lakes, Salisbury 

 (Bissell). The forma maximus Morong (greatest) has been 

 found in the Connecticut River at East Windsor (Bissell), 

 and in Lake Whitney, Hamden (O. D. Allen). The forma 

 TERRESTRis Schlecht. (terrestrial) is often found along borders 

 of ponds and streams in dry seasons. 



Potamogeton angustifolius Berchtold & Presl (narrow- 

 leaved). 



Rare. Oxford, in the Housatonic River (Harger). July 

 — Aug. 



The var. connecticutensis (Robbins) Benn., Potamoge- 

 ton lucens L., var. connecticutensis Robbins, occurs rarely in 

 ponds, lakes and rivers: Lake Saltonstall (J. W. Robbins) ; 

 in the Housatonic River at New Milford (E. H. Austin & 

 Eames) and Kent (C. K. Averill) ; also in Twin Lakes, Salis- 

 bury (Bissell). 



Potamogeton lucens L. (shining). 



Rare. Ponds and slow streams : Lyme, at Selden's Cove 

 (Graves), Meriden (Harger), Salisbury (Bissell). July — 

 Aug. 



Potamogeton praelongus Wulf. (very long). 



Local. Deep water of ponds and streams : North Bran- 

 ford and Wallingford (Harger), Lake Saltonstall (J. A. 

 Allen), Westport and Kent (Eames), Litchfield (Dr. T. 

 Morong), Canaan (J. W. Robbins). June — July. 



Potamogeton Richardsonii (Benn.) Rydb. 



Potamogeton perfoliatus L., var. lanceolatus Robbins. 

 Potamogeton perfoliatus L., var. Richardsonii Benn. 

 Common. Ponds and streams. June — July. 



