TRANSACTIONS OF WAGNER 

 30 



THE VEGETATION OF THE HACKENSACK marsh: A TYPICAL AMERICAN FEN 



COMPOSITAE 



Achillea Millefolium 1^. (Yarrow). 



Very common along roadsides. 

 Ambrosia artemisiifolia L. (Ragweed). 



Very common along roadsides. 

 Ambrosia trifida L. (Great Ragweed). 



Forms thick green patches along marsh borders and ditches. 

 Arctium minus Bernh. 

 Aster paniculatus Lam. 



Hackensack marsh. 

 Aster paniculatus Lam. var. bellidiflorus (Willd.) Burgess. 



Hackensack marsh. 

 Aster Tradescanti L. 

 Bidens frondosa L. (Beggar- ticks). 



Common in wet grounds. 

 Bidens laevis (L.) B. S. P. 



In brackish marsh over the valley. In early September this plant 

 makes great golden patches on the marsh. 

 Bidens trichosp'erma (Michx.) Britton. 



Marshes and ditches in the north. 

 Chrysanthemum leucanthemum L. (White Daisy). 



Common along roadsides. 

 Cichorium IntybusL. {Chicory). 



Roadsides and banks. 

 Cirsium lanceolatum (L.) Hill (Bull Thistle). 



Gravelly embankments and roadsides. 

 Erechtites hieracifolia (L.) Raf. (Fireweed). 



Moist meadows. Common. 

 Eupatorium perfoliatum h. (Boneset). 



Common in low copses. 

 Eupatorium purpureum L, (Joe-Pye Weed) . 



Low moist meadows. Common. 

 Eupatorium sessilifolium L. (Upland Boneset). 



Meadows on Snake Hill. 

 Galinsoga parviflora Cav. 



Railroad embankments. 

 Helianthus annuus L. (Sunflower). 



Waste ground along ditches near the Susquehanna Railroad in the 

 northeastern part of the valley. 

 Helianthus divaricatus L. 



Dry copses and banks. 



