46 COXXECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull 



Sagittaria latifolia Willd. (broad-leaved). 

 Sagittaria variabilis Engelm, 



Frequent or common. Marshes and shallow water of 

 ponds and streams. Aug. — Sept. 



The forma obtusa (Muhl.) Robinson (blunt), Sagittaria 

 ohtnsa Muhl, is occasional; the forma hastata (Pursh) 

 Robinson (halberd-shaped), Sagittaria hastata Pursh, and 

 the forma gracilis (Pursh) Robinson (slender), Sagittaria 

 gracilis Pvirsh, are frequent. The forma diversifolia 

 (Engelm.) Robinson (various-leaved), Sagittaria variabilis 

 Engelm., var. diversifolia Engelm., is rare. 



Sagittaria Engelmanniana J. G. Smith. 



Sagittaria variabilis Engelm., var. gracilis Engelm. 



Rare. Bogs and wet meadows : Waterford, Voluntown 

 and East Lyme (Graves), Lyme (Dr. E. J. Thompson). 

 Aug. — Sept. 



Sagittaria arifolia Xutt. (arum-leaved). 

 Sagittaria cuneata Sheldon. 



Rare. Wet alluvial soil on the banks of the Connecticut 

 River: Windsor and Hartford (Bissell). June — July. 



Sagittaria heterophylla Pursh (various-leaved). 



Rare or local. Muddy river shores: Norwich (W. A. 

 Setchell), Lyme (Graves), Wethersfield (C. Wright), East 

 Windsor (Bissell), Windsor (H. S. Clark), Hartford (H. S. 

 Clark & Bissell), Bloomfield (A. W. Driggs), Seymour and 

 Derby (Harger). June — July. 



The var rigida (Pursh) Engelm. (stiff), Sagittaria rigida 

 Pursh, and the var. elliptica Engelm. (oval) sometimes 

 occur with the species. 



Sagittaria graminea Michx. (grass-like). 

 Sagittaria Eatoni J. G. Smith. 

 Sagittaria cristata Engelm. 



Occasional or local. Muddy shores of ponds and streams. 

 June — Aug. 



Sagittaria subulata (L.) Buchenau (awd-shaped). 

 Sagittaria pusilla Xutt. 

 Sagittaria natans ]\Iichx., var. lorata Chapm. 



