218 Mr. Woops.on the British Species of Rosa. 
This is generally a weak straggling Rose, which, in the instances 
which have fallen under my notice, does not flower very freely. 
Mr. Borrer, however,—to whose accurate observations this essay 
is in many instances deeply indebted,—finds a plant in the neigh- 
bourhood of Henfield in Sussex, which, agreeing in other respects 
with this, is yet neither of feeble growth nor unwilling to flower. 
Even under this appearance the aculei are usually smaller and 
weaker than in the neighbouring species. 
B. has a stronger growth and larger aculei than are usual in @; 
the pinne of the calyx are also narrower, the flowers in a 
cyme, much more numerous; and both in appearance and 
character it approaches very near to R. surculosa. 
7. has a leaflet of a very dark shining green, much longer than 
usual in R. dumetorum. 1 have seen very little of it, and 
have therefore for the present joined it to this plant on ac- 
count of the small bracteæ, small aculei, weak growth, and 
. the pubescence of the leaves, which are decidedly hairy on 
- the veins and on the surface beneath, and exhibit some scat- 
“tered hairs on the upper surface: but it must be confessed, 
that in the shape of the leaflet and the general appearance 
. of the plant it has little affinity with this species, 
If we except the doubtful variety y, the flat leaves of this Rose 
(a considerable portion of which in every plant is either subro- 
tund and acuminate, or at least very much rounded at the base) 
will distinguish it, without reference to the pubescence, from R. sar- 
mentacea, R. collina, and R. canina. This form and expansion of 
the leaf it has in common with R. Borreri and R, surculosa ; but 
the first has its leaves doubly serrated, in the latter they are al- 
ways entirely smooth on both sides. I have already recorded an 
observation which throws some doubt on the former character ; 
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