256 GEOLOGICAL SURVEY OF NEW JERSEY. 



Var. spongiosa, Engelm. 



Camden : In tidal mud Parker. 



S. heterophylla, Pursh. 



Camden : Frequent in wet places Canby. Hunterdon : 

 Bull's Island, Delaware River Porter. 



Var. elliptica, Engelm. 



Camden : Delaware River Martindale. 



Var. angustifolia, Engelm. 



Camden : Delaware River Martindale. Passaic : Outlet of 

 Greenwood Lake Britton. 



Perhaps both these varieties should more properly be consid- 

 ered as forms. 



S. grraminea, Michx. 



Morris : Swamps, Lake Hopatcong Rusby. Passaic : 

 Cooper Rudkin ; Paterson Leggett. Sussex : Pond near 

 Branch ville Britton. 



S. natans, Michx. (S. pusilla, Nutt.) 



Camden : Shores of the Delaware River Parker. Mercer : 

 Trenton Martindale. Bergen: Hackensack streams Torrey 

 Catalogue; Fairview Austin. Passaic: Passaic Leggett. 



NAIADACE.E. 



(List revised by Rev. Thomas Morong.} 

 TRIGLOOHIN, L. 



Arrow-grass. 



T. maritimum, L. 



Monmouth : Wet grounds. Not common Willis. Not 

 recently collected, nor seen by me from the State. 



SCHEUCHZBRIA, L. 



Scheuchzeria. 

 8. palustris, L. 



In bogs. Morris : Budd's Lake Porter. Camden : Longa- 

 coming C. E. Smith. 



