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‘Tk has bea found convenient to divide the surface of the earth inte dif- 
ferent stations, when treating’ of botanical! geography. In this part of the 
subject I shall adopt the arraigement and distinetions of De Candolle ; 
agreeing with him that they at ‘least indicate the most remarkable: differ- 
ences of station, if they are not poe areinie of any rigorous definitions. 
fie admits the followi ing ‘elas 
° ii" ar itinee, or saline phiiste that is to suy, those w tieh, withous be- 
ing plunged in salt water, and floating on its surface, are nevertheless con- 
strained to live in the vicinity of salt water, for the sake of : absorbing what 
isp - fasted or their nourishment. Among these it is requisite to dis- 
abort saline orinepis, both by their lees aud roots, from those w hich, 
rocks exposed to the sea air, and appear 
to absorb by their leaves aja ; and finally, a third class, such as 
eryngium campestre, which do not require salt water, but which live on 
the sea-coast, as well as elsewhere, because their constitution is so robust 
that they are not aflected by the action of salt. 
2. Marine plants, also salled 'Thalassiophytes by M. Lamonroux, which 
live either plunged in salt water orfloating on its surface. These plants 
are distributed over the bottom of the sea, or of salt water, in proportion to 
the degree of saltness of the water, the usual degree of its agitation, the con- 
tinnity or intermittence of immersion, the tenacity ‘of the soil, and 
~ perhaps, also, the intensity o ! 
 . B. Aquatic plants, diving etal in frésh wate ‘ryeither entirely imme 
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their _ with the fohage i in the water, as several kinds of potamogeion ; 
s Sor tooted in the soil, and either floati; ng on the surface, as nymphaa; or 
ep above it, as Alisma plantago. ‘This iast division is very near the fol- 
Bes: lowing class. 
| s — {Plants of fresh water marshes, and of very wet places, among which 
is chiefly necessary to distinguish those of bogs, of marshy meadows, and 
cf the banks of running streams s; and, finally, those of places inundated 
fh winter, but more or less dried up during — ge 
5. Plants of meadows and pastures, in “the tudy of whic. itis requisite 
10 distingush those that, by their natural or avtilie ial association, form the 
iu 
‘the — and those others which grow mixed together with: a 
‘greatest fac 
a rm: buitivated soil. This class has _ a produced by 
the agency of man. The plants which grow i vated landare those 
» which, j ina wild State, ‘preferred light substantial per Many bave been 
tran one country to another with the seeds of other enltivated 
‘sae Those individuals of the same spaokee which are found in fiel 
vineyards, and gardens, are often different in some respects, tencid egg to 
. the peculiar manner in which they have been cultivated. 
*Onthe low Rigen islands = cng Pacific, the cocoanut palm flomishkes. As most of these 
coral-rock i fis nor springs of fresh water, the inhabitants wonld hago 
Sora were it not for the wat wages eocoantk. VYhis wonderful tree is new thrivir 
even Indian Key, a coral-rock of only twelve acres, 6n the Florida Reef. H. 
+E mbraci ng many valuable a ‘of the familicsef palms and of bananas. Theest Sago 
..-— Rabiih only low pasta xs Frees Sage plentation or fe ous a. come 
rous- d Tien alm 0} i} prefersma ee, rounds; an 
= Sen a ands, — —* Silecoe ihe rived a} 
tidés och ce aday, dur ae — six months. a 
‘rsichoe na a Bleck 6 sate ” js a native a the swampy foress of Wes 
rged, * 
as conferve ; or floating on its surface, as stratiotes ; or fixed in the soil by: 
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