Report upon New or Rare Plants, 225 



With other British species it has so little in common, that 

 there is not one with which it is necessary to compare it. Of 

 the Roses not found wild in these islands there are two, 

 namely, R. cinnamomea and R. villosa of Linnaeus, each the 

 representative of a particular group of species, to which it is 

 almost equally allied ; to the former however in a greater 

 degree than to the latter. With R. cinnamomea it agrees in 

 the colour of its wood, in the form of its seta?, in the colour 

 and general appearance of its foliage, in the form of the 

 tube of the calyx, and in the smoothness and figure of the 

 fruit ; but it disagrees with it in its glandular regular sepals, 

 more robust habit, and glandular petioles and stipules. To 

 R. villosa it approaches in the form and serratures of the 

 leaves, in the glandular surface of the sepals, and very much 

 in its general appearance ; but it recedes from that species in 

 not having any tendency to produce spines on the fruit, in 

 its uniformly regular equal sepals, in the texture and direc- 

 tion of the leaflets ; and finally, in the total absence of that 

 peculiar smell of turpentine which pervades the whole of the 

 division of Villos^e Roses. 



At the suggestion of Mr. Sabine it has received its name 

 in record of the merits of the late Mr. James Dickson, a 

 Vice President of this Society, and an indefatigable investi- 

 gator of British Botany. 



The following description may possibly appear tedious ; 

 but by those who are acquainted with the difficulty of distin- 

 guishing species in this most intricate genus, it will not be 

 found more copious than is necessary. Bush, with the habit 

 and general appearance of an upright growing R. cinnamomea. 

 Young shoots light green, very slightly tinged with brown, 



VOL. VII. G g 



