CATALOGUE OF PLANTS. 259 



Britton. Monmouth : Torrey in Willis Catalogue. Hunter- 

 don : In the Delaware River- Schuh. 



P. Robbinsii, Oakes. 



Sussex : Swartswood Lake Porter ; Morris Pond Britton. 



Bergen : Hackensack River Austin. Morris : Budd's Lake 

 Porter. 



RUPPIA, L. 



Ditch-grass. 

 R. maritima, L. 



In shallow brackish water along the coast ; frequent. 



ZANNICHBLLIA, L. 

 Horned Pond-weed. 



Z. palustris, L., var. pedunculata, Gray. 

 Bergen : In ditches Austin. 



ZOSTERA, L. 



Eel-grass. 

 Z. marina, L. 



Common in salt water along the coast. 



NAIAS, L. 



Naiad. 

 N. flexilis, Kostk. 



In ponds. Frequent, especially in the northern counties. 



N. Indica, Cham., var. gfracillima, A. Br. 



Salem : In the pond at Woodstown, 1881 Commons. 



ERIOCAULE^E. 







BRIOCAULON, L. 



Pipewort. 

 B. decangulare, L. 



In pine-barren swamps; frequent or occasional. 



E. gnaphalodes, Michx. 



In pine-barren swamps ; common. 



