

I 



II 



|III 



IV 



1 V 



A^I 



VII 



VIII 



IX 



Cypripedimn parviflorum 























pubescens (Willd.) Kn. 



a 

















5 





Subclass II — DICOTYLEDOXE^ 





















Family Salicacece 























Salix nigra Marsh, 



c 



















4 



Salix amygdaloides Anders. 



c 



3 



3 





3 



3 



3 



3 





3 



Salix longifolia Muhl. 



c 





4 





4 







4 





4 



Salix cordata Muhl, 



c 

















3 



4 



Salix discolor Muhl. 



c 



4 



4 











4 





4 



Populus tremuloides Michx. 



b 





3 



3 



3 



3 



3 



3 





3 



Populus deltoides Marsh. 



c 



4 



3 





3 



4 



3 



3 



3 



3 



Family Juglandacece 























Juglans nigra L. 



a 







3 



4 











3 



Carya ovata (Mill.) K. Koch. 



a 





5 

















Gary a cordiformis (Wang.) 























K. Koch. 



a 







3 



4 



4 



3 



3 





4 



Family Betulaceoe 























Corylus americana ATalt. 



b 





4 



3 



3 



4 



3 







3 



Ostrya virginiana (Mill.) 























K. Koch. 



b 



3 



3 



3 



3 



3 



3 



3 





3 



Family Fagacece 























Quercus alba L. 



a 



5 



















Quercus macrocarpa Michx. 



b 



2 



1 



2 



3 



2 



2 



2 



3 



3 



Quercus rubra L. 



a 







3 



3 











3 



Family VrticacecB 























Ulmus fulva Michx. 



b 



3 



3 



3 



3 



3 



3 



3 





3 



Ulmus americana L. 



a 



3 





3 



3 



3 



3 



3 





3 



Ulmus racemosa Thom. 



a 



















4 



Celtis occidentalis L. 



b 







4 



4 







4 





4 



Celtis occidentalis crassifolia 























(Lam.) Gray 



b 





4 







4 



4 



4 







Urtica g-raeilis Ait. 



c 



3 





3 









3 







Laportea canadensis (L.) 























Gaud. 



a 



3 





3 















Pilea pumila (L.) Gray. 



a 



3 



4 



3 







3 



3 







Boehmeria cylrindrica (L.) 























Sw. 



a 







4 















Parietaria pennsylvanica Muhl. 



a 



4 



















Family Aristolocliiacece 























Asarum canadense acuminatum 





















Ashe. 



a 



















3 



Family Polygonacece 























Polygonum pennsylvanicum L. 



c 











3 











Polygonum acre H. B. K. 



c 



3 





3 















Family Chenopodiacece 























Chenop odium hybridum L. 



a 



3 



4 



3 





4 





4 







60 



