. TRANSACTIONS OF WAGNER 



26 



THE VEGETATION OF THE HACKENSACK MARSH: A TYPICAL AMERICAN FEN 



ACERACEAE 



Acer rubrum L. (Swamp Maple). 



Very common in the acid swamps of the southern part of the valley. 

 Acer saccharinum L. (Silver Maple). -^ 



Rocky banks of Snake Hill. 

 Acer saccharum Marsh (Sugar Maple). 



Woods all over Snake Hill. 



Balsaminaceae 

 Impatiens Ufiora Walt. (Spotted Touch-me-not). 

 Abundant in shady moist places. 



VlTACEAE 



Psedera guinquefolia L. Greene (Virginia Creeper). 



Trailing over pipe lines which cross the marshes. 

 Vitis aestivalis Michx. (Pigeon Grape). 



Thickets on the steep western slopes of Snake Hill. 



Malvaceae 

 Hibiscus Moscheutos L. (Swamp Rose Mallow) (Figs. 5, 9). 



On brackish flats, borders of thickets, in shady moist copses, or out in 

 the meadow. This is one of the most beautiful and striking plants in 

 our wild flora. In August the marsh looks like a vast flower garden, for 

 many areas are colored white and pink by the profusion of the large 

 flowers. 



Onagraceae 



Epilobium angustifolium L. (Fire- weed). 



Gravelly embankments and roadsides. 

 Epilobium hirsutum L. 



Rather rare on the marsh, having been seen by the writer only in an 

 isolated spot near the Public Service Works. 

 Ludvigia alternifolia L. (Seed-box). 



Banks of Little Snake Hill. 

 Oenothera biennis L. (Evening Primrose). 



Very common in waste places. 



Umbelliferae 

 Cicuta maculata L. (Water Hemlock). 



Common in wet meadows. 

 Daucus Carota L. (Wild Carrot) . 



Common along roadsides. 



