48 



IMfKUMINAIIY STl'DV OF 



Magnolia fraseri Walt. 

 Liriodendron tulipifera Linn. 



Asimina triloba (Linn.) Dunal. 

 Sassafras sassafras (Linn.) Karst. 

 Hamamelis virginiana Linn. 

 Liquidambar styracifl.ua Linn. 

 Platanus occidentalis Linn. 



Pyrus coronaria Linn. 

 Pyrus ioensis (Wood) Bailey 

 Pyrus angustifolia Michx. 

 Pyrus americana (Marsh.) de C. 

 Amelanchier canadensis (Linn.) Medic. 



Crataegus punctata Jacq. 

 Crataegus cordata (Mill.) Ait. 

 Crataegus viridis Linn. 

 Prunus americana Marsh. 

 Prunus hortulana Bailey 

 Prunus angustifolia Marsh. 

 Prunus pennsylvanica Linn. t. 

 Prunus virginiana Linn. 

 Prunus serotina Ehrh. 

 Oercsi canadensis Linn. 



Gleditsia triacanthos Linn. 

 Oleditsia aquatica Marsh. 

 Gymnocladus dioicus (Linn.) Koch. 

 Cladrastis lutea (Michx. f.) Koch. 

 Robinia pseudacacia Linn. 

 Robinia viscosa Vent. 

 Ptelia trifoliata Linn. 

 Gotinus cotinoides (Nutt.) Britton 

 Rhus hirta (Linn.) Sudworth 



