Mr. Woods on the British Species of Rosa. 213 



the calyx-leafits as a decided mark of separation ; for the double 

 serratures of the leaflets are sometimes rather ambiguous, and al- 

 ways less strongly marked than those of JR. Borreri; and the simple 

 serratures of R.colliiia, thougli I believe never strictly compound, 

 arc yet freiiuently so irregular and unequal as to produce some- 

 thing of the same appearance. From R.hibernica ii.cissia is arti- 

 ficially distinguished by the total want of the smaller scattered 

 aculei. I have never seen this plant in a living state ; but Mr. Bor- 

 rer assures me that the dense mode of growth, glaucous shoots, 

 and hoary blueish gray foliage, contribute to give it an appearance 

 very different from that of any other Rose. 



Rosa ruhrifolia of Villars, Dauph. iii. 549» seems intermediate 

 between this species and R. nuclu. Baron Fr. X. Wulfen, in 

 Romer's Archiv.fur die Botanik, mentions a Rosa glaiicescens which 

 in some respects resembles this ; while in others it seems to unite 

 better with R. coUina. 



The Rose with leaflets pubescent on the underside, mentioned 

 by Afzelius in his Tent, de Ros. Siiec. as confounded in Sweden 

 with R.cciniua, is supposed by Sir J. E. Smith \nEngl. Bot. to be- 

 long to this plant; it seems to me to be decidedly my R.coUina ^. 



18. Rosa sarmejjtacea, 

 R. stylis distinctis, receptaculis ovatis, aculeis uncinatis, fbliolis. 



du plica to-serratis glaberrimis. 

 R. canina. Roth Ft. Germ. i. 218; ii. 560. 



Frutex 8 — 10-pedalis. Rami diffusi, olivacei, aculeati ; aculei adunci, nunc ran', spars!,. 

 nunc solitarii vel binato-stipulares. Pelioli absque pubesoentia, hie illic glaudulosi, 

 aculeisque falcatis basi expansis muniti. Stipulce spatulatse, glabrs, senatas, serra- 

 turis interdum glauduliferis ; eae fforibus propiores etram solitariis niulto latiores, 

 tniidem foliis deticientibus in bracteas ovatas acuminatas inamutatae ; ad floruin cymas 

 hi .ictcae illse numcrosiores, sed basi angustioies. Foliola 5 vel 7, elliptica, par superius et 

 foliolum iinpar ceteris niajora, subacuminata, glabra, supra cerea, subtus interdum nervo 



aculeata,. 



