NATURAL HISTORY, TORONTO REGION 
nocladus dioicus); Judas-tree (Cercis canadensis) ; 
sassafras (Sassafras sassafras); honey locust (Gle- 
ditschia triacan'hos) ; papaw (Asimina triloba), and 
flowering dogwood (Cornus florida). 
The original forest, however, was doubtless made 
up chiefly of oaks, hickories, maple, beech, basswood 
and elm, with the trees mentioned above as secondary 
species. Since the soil was of fine agricultural qual- 
ity, the forest has almost entirely given way to farms. © 
One is urged to visit Rondeau Park if he wishes to 
see a magnificent remnant of the forest type that 
originally covered the area. 
The southern relationship of the flora is also 
strikingly shown by the herbaceous forms. Probably 
fifty species or more, many of them ranging as far 
south as Florida, are found in Canada only in the 
region described above. Among these may be men- 
tioned: Rue anemone (Ranunculus thalictroides) ; 
corydalis (Corydalis flavula); mouse-ear cress 
(Sisymbrium thalianum); swamp saxifrage (Sazi- 
fraga pennsylvanica) ; Indian physic (Gillenia tri- 
foliata); wild indigo (Baptisia tinctoria); wild 
lupine (Lupinus perennis); hoary pea (Tephrosia 
virgimana) ; tick trefoil (Desmodium pauciflorum) ; 
bush clover (Lespedeza virginica); Carolina vetch 
(Vicia caroliniana); flax (Linum virginianum) ; 
milkwort (Polygala sanguinea); flowering spurge 
(Euphorbia corollata) ; swamp rose mallow (Hibis- 
cus moscheutos); great pinweed (Lechea villosa) ; 
loose-strife (Lythrum alatum); harbinger of spring 
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