CHAPTER III 
MIGRATIONS OF PLANTS 
“Race after race of leaves and men 
Bloom, wither and are gone; 
As winds and water rise and fall 
So life and death roll on.” 
FE are so in the habit of thinking of plants 
as fixed and static things that it rarely oc- 
curs to us that they migrate over the earth’s 
surface quite as extensively as do men or 
animals. 
While it is probably true that vegetation 
Originated simultaneously at different points 
on the globe’s surface, not much observation 
is necessary to indicate that it does not always 
stay where it is put. Plants are peculiar and 
native to certain lands in a very definite way, 
but their love of adventure often carries them 
to the far corners of the earth. They are the 
most energetic and effective colonizers in 
existence. The complete history of plantdom 
would include the stories of invasions, con- 
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