ROSA ARVENSIS. 11s 
shining, evergreen, and set on at short intervals; of 
the latter opaque, glaucous beneath, deciduous, and 
covering the branches thinly. The bracteze of arvensis 
are short and erect, the flowers solitary; of semper- 
virens reflexed with a narrow point and red and shining, 
the flowers in bunches. The former often produces a 
callosity at the ramifications which, under favourable 
circumstances, strikes root; the latter never. 
R. montana of Villars is an exceedingly obscure 
plant; its author describes it with the styles of arvensis, 
and his description answers well to mountain specimens 
of that plant brought from Switzerland by Mr. Hooker; 
except in not having hispid fruit. If, however, the 
R. montana of Villars and Suter be not distinct from 
arvensis, there is little reason to suppose that what 
other botanists have taken for it are so also. The spe- 
cimens from Schleicher under that name which I have 
had an opportunity of examining, as far as can be de- 
termined from such imperfect morsels, appear to be of 
rubiginosa ; and, as Sir James Smith depends upon his 
authority in this instance, it is not improbable that the 
plant from which the description in Rees’s Cyclopzdia 
was formed, is the same. The account of R. montana 
in the supplement to the Flore Francaise reads very 
like R. rubiginosa also. 
Var. y I, for a long time, was disposed to consider 
a distinct species. From its habit it might be thought 
an hybrid production, between R. provincialis and ar- 
vensis, for in flowers, prickly leaves and mode of 
growth it seems to partake equally of both. But when 
I saw the var. Monsonie of the last species, I was con- 
vinced that the present plant bore just the same rela- 
tion to arvensis as that does to the species under which 
it is placed. Ihave therefore referred it hither, but in 
doing so it is necessary to subjoin the principal differ- 
ences which distinguish it. The branches have set 
sparingly mixed among the prickles; leaflets mieess 
oblong-ovate, the younger ones stained with 
flowers in — very large, semi-double, of, the 
q 2 
