206 ROSACEAE 



4. Kennet. Dornington Castle, Bicheno. Near Kintbury. Hanip- 



stead Marshall. 



5. Loddon. Winkfield. Near Whistley Mill. Near Loddon 



Bridge. Near Hurst. Wargrave. Knowl Hill. Littlewick 

 Green. Between Hurst and Ashridge Wood. Hurst Green. 

 Waltham. Near Kuscombe. Very fine specimens in a hedge 

 near Maidenhead. Near Blackwater and Sandhurst. 

 Aggregate R. stylosa occurs in Bucks (near Brill, near Chalfont and 



Stoke Poges), in Hants (near Highclere, &c,), Sui-rey, Wilts, and 



Oxfordshire. 



K. arvensis, Huds. Fl. Angl. 192 (1762). White-floicered Dog Rose. 



R. canina humilior frudu rotuncliore, Plot, Nat. Hist. Ox. 1677. 

 Top. Bot. 153. Syme, E. B. iii. 231, t. 476. Nyman, 231. Fl. Oxf. 103. 

 Native. Septal. Hedges and woods. Common and widely distributed, 

 but more frequent on stiff soils. The fruit sometimes does not 

 ripen until the following year. Occurs in all the districts. Shrub. 

 May-July. 

 First record. Sonning, Mr. S. Rudge, 1800, and Berkshire, Mr. J. Woods, 

 1824, in Herb. Brit. Mus. R. arvensis, Dr. Noehden, Mavor's Agr. 

 Berks, 1809. 

 Var. DiBRACTEATA (Batard in DC, Fl. Fr. v. 537 (1815)^ as a species\ 

 not of Thory. Var. bibkacteata, Kedoute & Thory, Les Eoses, i. 90 

 ':i8i7). 



1. Isis. Wytham. Appleton. 2. Ock. Wittenham. Radley. 



Wootton. 3. Pang. Hampstead Norris, W. M. Rogers. Brad- 

 field. Tilehurst. Streatley. Oare. 4. Kennet. Beedon, W. M, 

 Rogers. W. Ilsley. Kintbury. Mortimer. Hampstead Marshall. 

 5. Loddon. Near Maidenhead. Winkfield. Risely. Finchamp- 

 stead. 

 M. Crt^pin does not believe that we have any true var. dibradeata in 

 Britain. 

 Var. gallicoides, Crepin in Bot. Exch. Club Rep. (1887) 181. 

 R. stylosa, var. gallicoides. Baker in Linn. Soc. xi. (1869) 240. 

 1. Isis. Near Wytham. Appleton. 2. Ock. Near Marcham. 



5. Loddon. Near Loddon Bridge. 

 Obs. A pink-flowered form of R. arvensis was found near Early, and 

 near Woodhay. By the Emborne Stream near Greenham Common 

 and near Sandleford. R. arvensis often occurs with persistent and 

 erect sepals (? var. cristata), but M. Ci'epin considers it to be rather 

 an accidental condition than a true variety. I have, however, noticed 

 it for four consecutive years in these localities. A similar form is 

 j'eferred to in the Flora 0/ Herefordshire, 122. 



R. arvensis occurs in all the bordering counties. 



