ROSA CANINA, 108 
To R, dumetorum of Thuilliers the succeeding list 
of synonyms may be referred. It is distinguished from 
canina a by its dull grey hue, occasioned by the dense 
pubescence of every part of the leaves: but by nothing 
else. It is more frequent in North Britain than else- 
where. The petioles are sometimes unarmed, as in R. 
sepium of Rau. R. leucochroa has the styles a little 
exserted and united by their hairs. Care must be 
taken not to confound this with R. systyla, whose styles 
are smooth and consequently cohere from some other 
cause than the intertexture of their hairs. I have spe- 
cimens from Mr. Lyell of a very grey Rose gathered at 
Kinnordy, with nearly simple sepals, which must be 
referred here. RR. bractescens of Woods has very short 
peduncles and large bracteze; but I have examined 
Mr. Woods’s own specimen in the collection of the 
Linnean Society without being able to distinguish it 
from R. dumetorum. Every diversity of form of bracteze 
and length of peduncle may be observed in the hairy- 
leaved canina of Scotland. 
R. cesia is a curious plant, first taken up in Eng- 
lish Botany. It is scarcely found out of the highlands 
of Scotland and there very sparingly. Its very glau- 
cous hue distinguishes it. 
There is a remarkable peculiarity in R. canina, that 
the further to the North any variety of that species is 
found, the more villous are the styles; and the less so 
as it proceeds southwards; hair entirely vanishes from 
those organs in Madeira. 
Its long rambling shoots are sometimes applied to 
the same purposes as those of Rubus fruticosus ; but 
they are inferior, being more brittle. The Tartars boil 
the twigs and leaves for tea; some Russians also have 
this custom, especially in Siberia, and praise its reviv- 
ing stomachic qualities. Those of the Volga prepare a 
spirit from the flowers by fermentation. In the Ukraine 
these are made into a preserve with honey and sugar. 
