TRANSACTIONS OF WAGNER 



THE VEGETATION OF THE HACKENSACK MARSH: A TYPICAL AMERICAN FEN 



Quercus velutina Lam. (Black Oak). 

 Dry gravelly embankments. 



Urticaceae 

 Celtis occidentalis L. (Sugarberry). 



Rocky woods on Snake Hill. 

 Humulus Lupulus L. (Common Hop) . 



Moist banks and rubbish heaps in the northeast section of the marsh. 

 Ulmus americana L. (American Elm). 



Moist banks along Snake Hill. 



POLYGONACEAE 



Polygonum arifolium L. (Halberd leaved Tear-thumb). 



Common in low grounds, clambering over other plants. 

 Polygonum aviculare L. 



Common everywhere in waste places and on railroad embankments. 

 Polygonum Convolvulus L. (Black Bindweed). 



Railroad embankments and waste places. 

 Polygonum Hydropiper L. (Common Smartweed). 



Moist grounds. 

 Polygonum hydro piper oides Michx. (Mild Water Pepper). 



Wet places and shallow water in brackish habitats. 

 Polygonum lapathifolium L. 



Common on moist banks and on brackish meadows. 

 Polygonum orientale L. (Prince's Feather). 



Moist ditches and waste ground. 

 Polygonum pennsylvanicum L. 



Common in wet open meadows. 

 Polygonum Persicaria L. (Lady's Thumb). 



Common moist places. 

 Polygonum sagittatum L. (Arrow-leaved Tear Thumb). 



Clambering over other plants in low swales. 

 Polygonum scandens L. (CHmbing False Buckwheat). 



Clambering on Typha and Phragmites. 

 Polygonum virginianum L. 



Moist woods on Snake Hill. 

 Rumex Acetosella L. (Sheep Sorrel). 



A common weed everywhere on the dry places. 

 Rumex Britannica L. (Great Water Dock) (Fig. 12). 



A tall, stout herb, growing in great abundance everywhere on the 

 brackish flats. 



