242 MR. J, G. baker's M0>0GKAPH of BRITISH ROSES. 



quite naked, the upper deep green, the lower subglaucous; the 

 petiole not at all or only very faintly hairy and setose, with 3-4 

 slender uncinate aciculi. Flowers 4-6 if the branch is at all 

 robust ; the peduncles often an inch or more long, close together, 

 purple in exposure, more or less densely clothed with nearly or 

 quite sessile glands. Calyx-tube turbinate, purple and glaucous, 

 usually naked, rarely a little glandular. Corolla 15-18 lines 

 across when expanded, pure white, with a yellow throat. Sepals 

 naked on the back, broad-bladed, not more than | an inch long, 

 hardly at all leaf-pointed, and the main ones with only 1-2 pairs 

 of minute setaceous pinnse low down, reflexed after the petals 

 fall, deciduous. Fruit subglobose, naked, measuring about half 

 an inch long and thick, not turning red till October, wnth a thick 

 prominent disk. Styles always firmly united in a glabrous co- 

 lumn which equals the stamens. 



This is much more common in the southern than the northern 

 half of England ; and though it reaches Kincardineshire, it is a 

 very rare plant north of the Tweed. On the Continent it does 

 not reach northward to Scandinavia ; but from Belgium and 

 France it is common eastward through Central Europe, extend- 

 ing to Sicily, Macedonia, and the Ural Mountains. Our or- 

 dinary plant is the repens of Dcscglise ; his arvensis is a weak form, 

 with the peduncle naked and flowers usually solitary. 



Var. BIBRACTEATA (Bastard). 



R. BIBRACTEATA, Bast. in DC. FL Fran^. v. p. 537; Tratt. Mon. n- 

 p. 96 ; Descg. Mon. p. 18. 



R. ARVENSIS, var. bibracteata, Seringe in DC. Prodr. n. p- ^^^z ? 

 Dumort, Belg. p. 65. 



R. rusticana, Deseg. Billotia, p. 34, Herb. Ros. 1. 



Shoots stronger and more assurgent than in the type ; leaflets 

 15-18 lines long by two-thirds as broad, more pointed than in 

 the type, and more sharply toothed ; the calyx-tube and fruit ob- 

 ovoid ; the sepals a little more compound ; the peduncles rather 

 more spreading than in the type, thinly glandular; the petals 

 often an inch deep ; the fruit ^-| inch long by | inch broad. 



Seen from Sussex (Borrerl, Woods]), Devonshire (Briff^sl), 

 Cambridgeshire {Bahinjtonl), Essex (Farenne !), and Northum- 

 berland {Bichardsonl), Liable to be called ^sys/y 7a by those 

 who know ordinary arvensis and not the other species. 



From the preceding list rubella and pomifera require to be 



