8 



1. Sparganium eurycarpum Englem. Fig. 3, Map 4 



Common along the coastal plain and in alkaline waters of western 

 New England. Erect, in shallow waters and on damp shores, swales 

 and marshes. This is the tallest of the bur-reeds in New England, 

 occasionally reaching a height of 1.5 m. Range extends from the Mag- 

 dalen Islands, Quebec west to northern Alberta and southern British 

 Columbia, south to Virginia, Missouri, Oklahoma, New Mexico, Ari- 

 zona, and California. 



Rare and endangered plant list: New Hampshire 



alkalinity: mean 47.7 mg/1; range 17.0-108.5 mg/1 

 pH: mean 7.4; range 6.7-8.2 



2. Sparganium minimum (Hartm.) Fries Fig. 4, Map 5 



Scattered throughout northern New England, becoming infre- 

 quent southward, rare in Massachusetts and northwestern Connecti- 

 cut. Submerged, floating or occasionally slightly erect in shallow 

 water. Range extends from Newfoundland west to Alaska, south to 

 northern New Jersey, northern Pennsylvania, Michigan, Wisconsin, 

 Utah, northern Arizona, and California. 



Rare and endangered plant lists: Massachusetts, Connecticut 



alkalinity: mean 35.4 mg/1; range 3.5-69.5 mg/1 

 pH: mean 7.3; range 6.5-8.5 



3. Sparganium fluctuans (Engelm.) Morong Fig. 5, Map 6 



Scattered in waters of low alkalinity throughout northern New 

 England, rare in southern New England. Submerged plants with float- 

 ing leaves, leaf width varying from 3-11 mm, but generally broader 

 than 5 mm. Range extends from Newfoundland west to southern 

 Quebec and northern Alberta, south to New England, northern Penn- 

 sylvania, northern Michigan, and Minnesota. 



Rare and endangered plant list: Connecticut 



alkalinity: mean 13.5 mg/1; range 3.0-49.5 mg/1 

 pH: mean 6.9; range 6.1-7.9 



4. Sparganium androcladum (Engelm.) Morong Fig. 6, Map 7 



Rare in northern Maine, scattered in southern New England. 

 Large erect plants up to 1.2 m growing along damp shores and in 

 marshes. Range extends from Quebec west to Minnesota, south to 

 southern Virginia, eastern Tennessee, Illinois, and Missouri. Reports 

 from Oklahoma and Texas are doubtful. 



