98 Annals ok ihk Caknkgik Musk.i'm. 



CELTIS Linnreus. 



* C. occidentalis Linnosus. Hackbeny. 



MORACEiE Lindley. 

 MULBERRY FAMILY. l\'-g. 



CANNABIS Linn;eus. 



* C. sativa Linnceus. 



Pittsburgh, occasionally, in waste ])laces. 



HUMULUS Liniiffius. 



* H. Lupulus Linnaeus. Hop. 



Doubtfully native. 



TOXYLON Rafniesciue. 

 MACLURA Nuttall. 



* T, pomiferum Rafinesque. Osage orange. 

 -1/. aiirantiaca Nuttall. 



Escaped from hedges. 



MORUS Linnaeus. 



* M. rubra Linnaeus. Red mulberry. 



* M. alba Linnaeus. White mulberry. 



Moon Township, two trees by fence-row, W'm. Tondinson's. 1890. 



URTICACEiE Reichenbach. 

 NETTLE FAMILY. IV- 10. 

 URTICA Linn;cus. 

 '■> U. gracilis Alton. Slender nettle. 



T U. dioica Linn;x:us. Stinging nettle. 



