170 ANNALS OF SCOTTISH NATURAL HISTORY 



between these two groups. In 1869, in the fifth fascicle of 

 my ' Primitiae,' I described, under the name of Transitorice 

 a group intermediate between lutetiana and dumalis" 



Group R. dumetorum (Thuill.). 



23, from Mid Perth, East Perth, West Perth, Fife, 

 and Berwickshire. 



Remarks. " No. 84 has teeth double and simple. No. 

 87 has irregular teeth, simple or with one or two ' denticules.' 

 No. 440, teeth often double. No. 442, a certain number of 

 double teeth. No. 86 belongs apparently to this group, 

 only it seems to approach R. obtusifolia, Desv. It will be 

 necessary to study it again on the living bush, and to gather 

 new specimens. It remains to be seen if it is not a variation 

 of R. coriifolia, Fries." 



With respect to this last specimen, which was too imma- 

 ture for certainty, I have not, on subsequent visits to the 

 locality from which it was taken, been able to identify the 

 exact bush. There is a large colony of roses, amongst which 

 grow both R. coriifolia and R. dumetorum. I now think 

 that No. 86 was a form of R. coriifolia. 



R. sub-canina (Christ.) and R. sub-collina (Christ.). 

 " The feeble and transitory characters of the glabrous and 

 pubescent forms of this intermediate group render the deter- 

 mination of herbarium specimens often doubtful. Accord- 

 ingly it is with many reserves that I class the following 

 Nos." 



R. sub-canina (Christ.). 



14, from eight localities, in East Perth, Mid Perth, 

 West Perth, and Arran. 



R. sub-collina (Christ.). 

 7, from five localities, in East Perth and Mid Perth. 



The above Nos. were all contained in my second 

 parcel. Those of the first group were sent under the name 

 of R. httetiana, a few as R. glauca. Those of the second I 

 had classed as R. coriifolia. I do not pretend to under- 



