138 MR. G. H. HARRIS ON THE FLORA OF GREAT YARMOUTH DISTRICT. 
itself, and when we put together a list of the woodland plants 
characterised in 1834 as rare or wanting, and which are now easily 
found, our wonder is not likely to diminish. Anemone nemorosa 
can hardly have been overlooked, for the remark, “Mr. Turner 
used to find it in the plantations at G unton Hall,” shows that the 
district that now produces it plentifully, was known to produce 
it then, although in small quantities. Gunton Hall plantations 
I do not know, but I know plantations close by at Lound, and in 
certain of those the flower is abundant. Again, Oulton Broad had 
been botanised by Sir J. Paget, for w y e find a mention of it in the 
list. But quite close by that sheet of water is Carlton Colville, 
with its plantations white with this beautiful flower. Running my 
eyes down the numerous Buttercups, an incident which happened 
in the quite early days of my botanical experiences recurs to me; 
an incident, perhaps, worth telling, as it shows how certain 
flowers, though apparently allied, never permit the one to encroach 
on the other’s preserves, or to put it in more scientific language, it 
shows in a rather forcible way, how one of two plants which are 
alike in every other particular, may have so specialised a certain 
organ that it becomes unable to exist outside its own environ- 
ment, even though the other environment, similar in almost every 
particular, adjoins it. Along Breydon Water are high banks, built 
up out of river mud, in order to stop the encroachment of the tide. 
These banks or walls are, in some places, superimposed on the 
marsh land which runs down to the water’s edge, and the soil 
of this marsh land, whatever it may have been in days gone by, 
has, by the processes of draining and farming, become just rich 
enough to support a fresh marsh vegetation. So here were two 
contiguous soils, the chemical constituents of which did not very 
materially differ. Nor, to a casual observe]', was the vegetation 
supported by the soils dissimilar. Both were bright with the 
shining yellow of the Buttercup. Yet a closer examination 
revealed not only that Ranunculus repens and Ranunculus bulbosus 
were present, but that each confined itself in the strictest way 
to its own soil ; R. repens growing on the wall and down to 
the foot of it, but never crossing over to the marsh, whilst 
Ranunculus bu'lbosus restricted itself to, and never passed beyond 
the confines of the marsh. 
Ranuncul us arvensis is reported by Paget, on the authority of 
