ROSA 203 



R. dumetoriim, Thuill. Fl. Paris, ed. 2, 250 (1799), (not of Sm. E. B. 

 t. 2579). R. canina, vai*. dumetoriim, Desv. Journ. de Bot. ii. (1813) 

 115. Syme. E. B. iii. 223. Nyman, 235, Fl. Oxf. 108. 



Native. Septal. Hedges. Not uncommon and widely distributed. 

 Shrub. May-June. 



First found in Berkshire by the author in 1880. 



1. Isis. Cumnor. Wytham. 



2. Ock. Wootton. Hinksey. Eadley. Wittenham. Lockinge. 



Boar's Hill. Frilford. &c. 



3. Pang. Common about Beedon, W. M. Rogers. Streatley. Hamp- 



stead Norris. 



4. Kennet. Common about Beedon, W. M. Rogers. Lambourn. 



Thatcham. Hungei'ford. 



5. Loddon. Stubbing's Heath. Maidenhead. Risely. Swallow- 



iield. Windsor Park. Wargrave. Bisham, &c. 



R. dianetoritm occurs in all the bordering counties. I have seen it in 

 Bucks, near Brill and Stoke Poges ; in Gloucestershire near Kingham. 



Var. URBicA (Leman in Bull. Soc. Phil. Paris (1818) 93, as a species). 

 R. Forsferi, Sm. Engl. Fl. ii. 392. R. canina, var. urbica, Baker, in Linn. 

 Soc. Journ. xi. (1869) 228. Syme, E. B. iii. 225, t. 474. 



1. Isis. Wytham. Shrivenham. Faringdon. 



2. Ock. Hinksey, Dyer in Britt. Contr. 187 1. Boar's Hill, the author 



in Rep. of Bot. Rec. Club, 1880. Bagley. Wittenham. Tubney. 

 Radley. Frilford. 



3. Pang. Common about Beedon, W. M. Rogers. Moulsford. Brad- 



field. Compton. 



4. Kennet. Common about Beedon, W. M. Rogers. Kintbury. 



Midgham. Mortimer. 



5. Loddon. Twyford. Windsor. Wokingham. Blackwater, &c. 

 Var. PLATYPHYLLA (Rau, Enum. Rosar. Wirceb. 82, 1816, as a species). 



Syme, E. B. iii. 224. Fl. Oxf. 107. 



2. Ock. Near Wootton and Cumnor Hurst. 



The specimen of R. platuj^hylla, Rau, from Compton, collected by 

 Mr. F. A. Rogers, is referred to tomentella by M. Crepin with some doubt. 



Var. ARVATicA (Puget, ex Baker in Naturalist, i. (1864) loi, as a 

 species). R. canina, var. arvaiica, Baker in Linn. Soc. Journ. xi. (1869 

 229. Syme, E. B. iii. 217. Nyman, 233. Fl. Oxf. 107. 



1. Isis. Wytham. Cumnor. 



2. Ock. Marcham, Fl. Oxf. Wootton. Sunningwell. Radley. 



3. Pang. Common at Beedon, W. M. Rogers. Ashridge. Ashamp- 



stead. Streatley. ' 



4. Kennet. Common at Beedon, W. M. Rogers. W. Ilsley. Chieveley. 



Donnington. Burghfield. Padworth. Aldermaston. Neai- 

 Silchester. 



