13 



8. Utricularia gibha L. Fig. 1, Map 8 



Common in shallow water, bogs, and along sandy shores of 

 southern New England, widely scattered in northern New England. 

 In New England this species is much more abundant in acidic sites, 

 while westward it is often found in wet marly sites of higher alkalin- 

 ity. Range extends from Nova Scotia, southern Quebec, and New 

 England west to New York, southern Ontario, Michigan, Wisconsin, 

 and Minnesota, south to Florida, Oklahoma, and Texas; California 

 and Mexico. 



alkalinity: mean 15.6 mg/1; range 3.0-69.5 mg/1 (16) 



pH: mean 6.7; range 5.8-8.6 (14) 



9. Utricularia biflora Lam. Fig. 1, Map 9 



Rare in shallow pools, wet peat, and along sandy shores of south- 

 ern New England. This species is easily confused with the more 

 common U. gibba and the rarer U. fibrosa, and is somewhat interme- 

 diate between them. Range extends from the Coastal Plain of eastern 

 Massachusetts, southern Rhode Island, and southern Connecticut 

 south to Florida and west along the Gulf Coast to eastern Oklahoma 

 and southeastern Texas. 



Rare and endangered plant list: New England, Massachusetts, 

 Connecticut 



10. Utricularia subulata L. Fig. 5, Map 10 



Rare in wet peats and sands in southeastern New England. Pres- 

 ently this species is known in New England from only two extant 

 sites, one in southeastern Massachusetts and one on Nantucket 

 Island. Range extends along the Coastal Plain from southwestern 

 Nova Scotia, southeastern Massachusetts, Rhode Island, and Long 

 Island, New York, to Florida and along the Gulf Coast to Texas; 

 inland to Tennessee, Arkansas, and eastern Oklahoma. 

 Rare and endangered plant list: New England 



11. Utricularia cornuta Michx. Fig. 5, Map 11 



Common in sphagnum bogs, wet sands, and along sandy or 

 peaty shores in New England. More abundant in acidic regions of 

 New England, but also found in the alkaline regions of northeastern 

 Maine and northern Vermont. This species is inconspicuous, except 

 when in flower. The bladder bearing, subterranean vegetative mate- 

 rial may be found floating in densely tangled mats after being washed 

 free by wave action. Range extends from Newfoundland and Quebec 

 west to northern Ontario, Wisconsin, and Minnesota, south to Dela- 



