Siatistics of the Flora of the Northern States. 393 
Moreover, seven orders comprise half of these plants; whereas 
it takes between nine and ten orders to embrace a moiety of all 
our indigenous species. 
The species which I have counted as those of widest range 
are simply those which are known to occur along or not far dis- 
tant from our frontiers on the four sides, without reference to 
the frequency of their occurrence within the area. And the 
ies designated as very abundant in individuals are merely 
those which occur copiously wherever the species occurs at all, 
iM & congenial station, even if only a single station be known, as 
ogue of those widely-ranging species which are most abundant 
hout our district, and another of the least abund- 
on trial, that this demands a critical considera- 
tion which I have not time to give, as well as a particular knowl- 
much too large, "and the climate, soil, &c., too diversified for the 
tes within our limits. : 
It may be earner that about 350 of these both — 
Spread and abundant species are herbs, 42 are shrubs or woody 
Vines, and 28 may be reckoned as trees. The latter, forming as 
they do an important feature in the vegetation of a country 
Which was. nat 
SECOND SERIES, VOL. XXIII, NO. 69.—MAY, 1857. 
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