OUTLINES OF BOTANY. LXXV 
tends to increase the size and heighten the colour of flowers, in propor- 
tion to ee stature ae foliage of the plan 
Shade, on the contrary, especially if —— Bod richness of soil 
and sufficient moisture, tends to increase the foliage and draw the 
stem, but to diminish the er, size, and colour of the flower 
rendering thorny plants yet more spinous. Moisture in a rich soil has 
a contrary effec 
The neighbourho ia of the sea, or a saline soil or atmosphere, imparts 
a thicker ore succulent consistence to the foliage and almost every 
part of the nie ine appears not ee to enable plants pigge 
annual to live throug the winter. Flowers in a maritime variety ar 
often much fewer, but not smaller 
The Ktictanes ‘of plants growing | in arich soil, and the dwarf stunted 
character of those crowded in poor soils, are too well known to need 
particularizing. It is also an rates observation how gradually the 
e 
the cold damp regions of the summ high mountain ranges, or into 
high northern latitudes; and yet it is e ioeuenely Hoi the want of atten 
tion hese circumstances that num oe tae ar false s species have been 
added to our Enumerations and Flor ance entails not only an 
increase in the size of the ilape: clasit or ‘of bareiGola r aot but often 
an inc aban oO ber in branches, in leaves, or leaflets of a com- 
pound leaf; or it may diminish the hiieas of the plant, induce thorns 
to grow paee into branches, etc. 
Capsules which, waht 3 pee lie close upon the ground, will often 
become larger, more succulent, and less re gre ae than those 
which are not so expend. te o the moisture of t oil. 
Herbs eaten down by sheep or nit or caer underfoot, or other 
wise checked in their growth, or trees or shrubs cut down to the e gro idk 
if then exposed to favourable circum he ances of soil and iets will sen nd 
- oe arya often so different in the form of their lea 
n their ramification and inflorescence, as to be scarcely recognizable fs = 
the same green ag 
uals which have germinated in spring, and flowered oe seagate 
will often be very different in aspect from er ee of ap 
: : ’ ped _ by. § 
wth. €: . 
brids, or asa between two distinct species, come under the same 
s from 
so eli hem vi m e 
existence. Absolute “pro of the origin of a plant found wi of course 
impossible; but it is pretty generally agreed that the feithiverian ‘oastibilats 
must always co-exist in a wild hybrid. It eee of the gee of 
c 
its two parents; it is to be found isola r almost isolat in s 
where the two parents are abundant; if ies are two or three, they a 
generally be dissimilar from each other, one partaking more of one pare 
another of the other; it seldom 2 good seed; it will never be has a 
where one of the parents grows ne. 
