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easily and certainly than by the eye. In all other characters except scent (in 
which it is often, in Herefordshire, as sweet as Sweet-brier itself) R. micrantha 
stands ‘half-way between Sweet-brier and Dog Rose. It is, I believe, more 
common in Herefordshire than its recorded distribution would indicate (1, 2, 3, 4, 
6, 7, 9, 11). [tis seldom, perhaps, absent from the hedges of any farm, if care- 
fully searched; and possibly stands next to R. tomentosa in generality of 
distribution. 
7. We now come to the really great species of the genusin Rosa: canina, L. 
It is the most common of all. It shares with some other ubiquitous species, (and 
with the animal after which it is named) the character of exhibiting a multiplicity 
of forms. Besides its commonness, it is also far and away the most abundant of 
all the species in individuals. It varies but little in armature ; greatly in clothing 
and glandular development. Taken as an aggregate, it seems to be nearly equally 
abundant throughout Great Britain. Taken inthe segregate, one peculiarity of its 
distribution in Herefordshire is the paucity of its glandular forms. These, how- 
ever, are not totally absent, but occur very sparingly. As one goes northward, these 
glandular canine increase in frequency, and in development; until in the north 
of England they become a very marked part of the aggregate species. Its abund- 
ance in individual plants is well illustrated by the fact that its three most common 
forms, lutetiana, dumalis, and urbica (with intermediates), which in Herefordshire 
make up, perhaps, 3 of all the species canina, make up also a good half or possibly 
two-thirds of all the Rose bushes in the county of Hereford. 
T now pass on to note its separate varieties, as found with us. 
(a) Lutetiana. This varies greatly in the shape, colouring, and angle of 
its leaflets, which are typically narrow and keeled ; and in their toothing. This 
latter should be sharp and simple; but, as a matter of fact, is seldom found quite 
simple ; never, I believe, with the simple open serration characteristic of urbica; 
often the leaflet is so irregularly as to become almost doubly serrate. On the 
other hand, I believe that it is always sharp (like the teeth of a hand-saw, in dis- 
tinction from those of a cross-cut saw). In this point of the irregular serration, 
as well as in the point of the numbers of blossoms in a cluster, lutetiana passes 
without any assignable break into 
(vb) Sureulosa. This, as an extreme or well-marked form, is not at all 
common in Herefordshire. I have just said that I can assign no limits between 
this and the last ; and there is scarcely a hedge in the county, which will not 
produce a luxuriant young bush, or spray from a bush, of lutetiana which might 
well pass for swrculosa. Occasionally, however, I have met with its characteristics 
(strong surcult, irregular serration, and numerous flowers in a cluster) produced 
in combination, and in such marked prominence, as to preclude the doubt that we 
have as *‘ good” swreulosa as any which the midland counties produce. I have it 
from at least three or four widely separated spots; two of these, (Orcop and 
Llangarren) being localities in which it had been already observed by Rev. W. 
H. Purchas, some years ago. 
(c) Spheerica, Rare. Ihave plants which I think must be assigned to this 
variety from two localities ; Breinton, in District 7, and Perrystone in District 2. 
