NATURAL HISTORY, TORONTO REGION 
Salix petiolaris, Sm. 
“purpurea, L. (Purple Willow). Introduced. 
sericea, Marsh. 
OpONs alba, L. (Silver-leaved Poplar). Introduced. 
lean ra. L. (Balsam Poplar). 
candicans, Ait. (Balm of Gilead). Very rare. 
“  deltoides, Marsh. (Cottonwood). Very rare. 
grandidentata, Michx. (Large-toothed As- 
pen). 
nigra, var. italica, Du Roi. (Lombardy P.) 
Introduced. 
tremuloides, Michx. (American Aspen). 
(T 
“ 
(74 
MyricaceaE (Sweet Gale Family). 
ee 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. 
ce 
BeruxaceaE (Birch Family). 
Corylus americana, Walt. (Hazelnut). Humber Val- 
ley. 
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