All Ecological Study of Buckeye Lake. 129 



Campanulaceae. 



Campanula aparinoides Pursh. Associated with Galium trifidum 

 in the more open thickets at the edges of pools in the southern 

 part of Cranberry Island. 



Specularia perfoliata (L.) A. DC. Edge of forest border south 

 of Avondale on margin of lake. 



Cichoriaceae. 



Taraxacum taraxacum (L.) Karst. Door yards of cottages and 



in meadows. 

 Lactuoa scariola L. Margin in levee north and west shores of 



lake. 

 Canadensis L. Baltimore and Ohio railroad embankment at 



edge of marsh east side of lake. 



Ambrosiaceae. 



Ambrosia trifida L. Very abundant at inner margin of forest 



zone where it abuts on the cultivated field, Lieb's Island. A 



common weed in other ruderal societies. 

 A. artemisiaefolia L. Very common and generally distributed in 



drier situations as railroad embankments, the levee, and 



door yards. 

 Xanthium spinosum L. Western portion of Charleston Island. 



Compositae. 



Vernonia noveboracensis (L.) Willd. Ruderal-zone western por- 

 tion of Charleston Island. 



Eupatorium perfoliatum L. Common on low, wet, open ground. 

 Not a bog plant but was found in 19 lo on the extreme 

 southern 'lobe of the bog. 



E. ageratoides Lf. Quite common in the forest zone of the 

 shores and islands and has also invaded the southeastern 

 portion of Cranberry-bog. 



