24 



Rare and endangered plant list: Vermont 



alkalinity: mean 24.6 mg/1; range 12.0-49.5 mg/1; (6) 

 pH: mean 7.0; range 6.5-7.3; (6) 



Selected References 



McCully, M. E. and H. M. Dale. 1961. Variations in leaf numbers in 

 Hippuris. Canad. J. Bot. 39: 611-625. 



McCully, M. E. and H. M. Dale. 1961. Heterophylly in Hippuris, a 

 problem in identification. Canad. J. Bot. 39: 1099-1116. 



Map 13. 

 Hippuris vulgaris 



