TRANSACTIONS OF WAGNER 

 24 



THE VEGETATION OF THE HACKENSACK MARSH: A TYPICAL AMERICAN FEN 



Saxifragaceae 

 Parnassia caroliniana Michx. 



Swamps near Moonachie. 



Hamamelidaceae 

 Hamamelis virginiana L. (Witch-hazel). 



Open woods on Snake Hill. 

 Liquidambar Styraciflua L. (Sweet Gum). 



Open woods on Snake Hill. 



Rosaceae 



Amelanchier ohlongifolia (T. & G.) Roem. 



Moist thickets near Belleville Turnpike. 

 Potentilla canadensis var. simplex (Michx.) T. & G. 



Dry gravelly soil along embankments. 

 Potentilla monspeliensis L. 



Dry banks. Common. 

 Potentilla primula Poir. 



Common on dry open soil. 

 Prunus serotina Ehrh. (Wild Cherry) (Figs. 7, 13). 



Very common in every section of the marshes. Especially frequent 

 along the banks of Sawmill Creek, where it is the only tree. 

 Pyrus arhutifolia (L.) L. f. (Chokeberry) . 



Swamps and low thickets. 

 Pyrus melanocarpa (Michx.) Willd. 



Moist woods. 

 Rosa humilis Marsh. 



Dry embankments along the Belleville Turnpike. 

 Sanguisorha canadensis L. (Canadian Burnet). 



Bogs and wet swales. Common. 

 Spiraea tomentosaJ^. (B.a.r&h.diC^. 



Wet banks along Belleville Turnpike. 



Leguminosae 

 Desmodium canadense'L. (Tick Trefoil). 



Wet meadows and swales. 

 Gleditsia triacanthos L. (Honey Locust) . 



Railroad embankments, Delaware, Lackawanna & Western R. R., near 

 Hackensack River. 

 Lespedeza frutescens L. (Bush Clover). 



Sterile soil on Little Snake Hill. 



