142 TRANSACTIONS OF THE [ Sess. Lxxv. 
later it was noticed by Prof Trail near Turriff. It was 
afterwards discovered, however, that the rose was actually 
being cultivated in that district, the cultivators believing 
that they had in their gardens the true sweet-briar. It 
seems probable, then, that Prof. Trail’s plant is an escape 
from cultivation. Or the reverse may be true. The plant 
may be a natural hybrid which has been taken into cultiva- 
tion from nature. Against this view is the fact that neither 
R. rubiginosa nor R. pimpinellifolia was observed in the 
district. The Caputh bush, Mr. Barclay says, is undoubtedly 
a natural hybrid, for there it is growing beside its parents. 
Another locality is now known where the rose grows 
plentifully. Irefer to that part of the Haddington coast 
between Port Seton and Longniddry, where it was found 
in September last by Mr. Barclay, its occurrence being 
noted in “Journ. Bot.,” 1910, p. 260. On October Ist, in 
company with its discoverer, I had the pleasure of seeing 
the growing plant, and of collecting specimens. It grows 
in large clumps, and some of the bushes are luxuriant, 
attaining a height of eight or nine feet. A fair quantity 
of fruit had ripened, though a greater quantity had aborted. 
On examining several receptacles, however, I found that 
only a few achenes had developed. 
The hybrid resembles R. rubiginosa in possessing sub- 
foliar scented glands, and also in having these glands dis- 
tinctly stalked. The prickles are numerous and unequal, 
the smallest straight, the others compressed, dilated, and 
curiously uncinate. Two distinct forms were found as re- 
gards the fruit. One form possesses long fruit, whereas 
the other has it globose. The former variety is quite new 
to Britain. In other features the two forms are similar. 
There can exist no doubt whatever that the rose at Port 
Seton is a natural hybrid. No better chance for hybridisa- 
tion could be imagined, for both parents are growing in 
close proximity. In some places it was noticed that their 
branches were interlacing. It is more than likely that 
other hybrid forms are to be found in the same locality, 
and I am quite certain that a careful search would be well 
rewarded. 
