THE 
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OF SOIENOCE. {TM eRAR 
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VOL. III. JANUARY, 1888. NOMEN 
THE DISTRIBUTION AND PHYSICAL, AND Past-GKro- 
LOGICAL RELATIONS oF British NortH 
AMERICAN PLANTS. 
By A. T. Drummonp. 
( Conclusion.) 
In illustrating the groups into which the flora-of the 
Dominion may thus be divided, lengthy lists of plants will 
‘be avoided, Sufficient examples will be given under each 
division to show the distinctiveness of the group. It has, 
however, to be borne in mind that new facts in distribution 
are always coming to light. The explorations of the coun- 
try between Lake Superior and the Pacific Coast are, com- 
paratively speaking, recent and limited, and in coming 
years, with fuller knowledge of the range of each species 
there, it will be possible to speak with more confidence of, 
and to group more accurately, the flora of the western half 
of the continent. At present, in the case of too many 
species, we have only general locations given, covering a 
wide stretch of country. 
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