'TRAvERs.—Comparison of the Floras of Nelson and Canterbury. 179 
sesses species, genera, or families of plants giving it any distinctive features 
not common to the other, each nevertheless possesses species attaining a more 
full development in the one than in the other, each possesses distinct 
species belonging to genera common to both, and in each we find species 
belonging to natural orders not at all represented in the other. In each we 
find the native vegetation apparently well adapted to the surrounding 
physical conditions, but in both we see symptoms which lead us to the sup- 
position that the peculiar native vegetation will one day disappear and be 
replaced by foreign plants, under precisely the same circumstances which 
have led to such changes in the Canary and other islands long colonized by 
Europeans. 
