-52- 



possibly due to the effects of salt spray. MJM 547 , 632 , 

 770. 



ULMACEAE (Elm Family) 



CELTIS L. 



C. occidentalis L. Hackberry 



var. pumila (Pursh) Gray 



Occasional; in sunken forest behind High Sandy and on 

 backdune ridge. MJM 381 , 481 , 573. 



ULMUS L. 



U. amer icana L. American Elm 



Rare; few trees scattered throughout southern tip of 

 island and on Grape Island. MJM 529 , 1212, 1216 . 



URTICACEAE (Nettle Family) 



URTICA L. 



U. dioica L. Stinging Nettle 



Rare; few plants in sunken forest behind High Sandy. 

 MJM 575 . 



ARISTOLOCHIACEAE (Birthwort Family) 



ARISTOLOCHIA L. 



A. durior Hill Dutchman' s-Pipe 



Cultivated; persistent on Grape Island. MJM 755. 



