NATURAL HISTOKY, TORONTO REGION 



Salix petiolaris, Sm. 



" purpurea, L. (Purple Willow). Introduced. 

 " sericea, Marsh. 



Populus alba, L. (Silver-leaved Poplar). Introduced. 

 " balsamifera, L. (Balsam Poplar). 

 " candicans, Ait. (Balm of Gilead). Very rare. 

 " deltoides, Marsh. (Cotton wood). Very rare. 

 " grandidentata, Michx. (Large-toothed As- 

 pen). 

 " nigra, var. italica, Du Roi. (Lombardy P.) 



Introduced. 

 " tremuloides, Michx. (American Aspen) . 



MYKICACEAE (Sweet Gale Family). 



Myrica asplenifolia, L. (Sweet Fern). Common 

 north of High Park. 



JUGLANDACEAE (Walnut Family). 



Juglans cinerea, L. (Butternut). 



" nigra, L. (Black Walnut). Infrequent. Al- 

 most its northern limit. 

 Carya cordiformis, K. Koch. (Bitternut Hickory). 



Fairly common. 



" glabra, Spach. (Pignut). Very rare. 

 " ovata, K. Koch. (Shell-bark Hickory). Fairly 

 common. 



BETULACEAE (Birch Family). 



Corylus americana, Walt. (Hazelnut). Humber Val- 

 ley. 



