134 ROSACES. [RosA. 



SERIES 2. SUBCEISTA'TM. Leaves eglandular beneath. Sepals ascending 

 after the petals fall, not deciduous till after the fruit (which ripens early) 

 colours. VARS. R. scleropliylla, Scheutz, and R. monticola, Rap., include 

 various forms of this. 



R. Reute'ri, Godet (R. nu'da, Woods ; Crepinia'na, Deseg.) ; near lutetia'na but 

 prickles more slender, peduncles short almost concealed by the bracts, 

 leaflets glaucous, bracts stipules and branches turning red. N. England, 

 common. YAR. subcrista'ta, Baker; like duma'lis, with characters of 

 8ubcri$ta't<s. N. of England and Scotland. YAR. Hailstone'i, Baker ; leaves 

 as in subcrista'ta, fruit later, styles less villous, sepals sooner deciduous, 

 prickles passing into unequal bristles. Yorkshire. YAR. R. implex'a, Greri. ; 

 like urb'ica, but fruit of this series. Yorkshire. YAR. R. coriifo'lia, Fries 

 (R. Iractes'ccns, Woods) ; like dumeto'rum, but fruit of this series, peduncles 

 very short bracts large. From Yorkshire northward. YAR. Watso'ni, 



glandular. N. of England < 



foliage of tomentel'la, but fruit of this series. Northumberland. YAR. 



Orovesiij Baker, connects Subcrista'tce with. I?, hiber'nica. 



SERIES 3. SUBRUBIGINO'SM. Leaflets glandular beneath on the midrib 

 and principal nerves only (not on the surface, as in R. rubiyino'sa). 



R. Borre'ri, Woods (R. dumeto'rum, Engl. Bot.) ; prickles stout much hooked, 

 leaflets flat doubly-serrate glabrous above, glands obscure, stipules and bracts 

 densely gland-ciliate, backs of these and sepals naked, flowers many, 

 peduncles bristly, calyx-tube ovoid naked, sepals at length spreading or 

 reflexed deciduous on the fruit changing colour. Yorkshire to Sussex. 

 YAR. R. Bake'ri, Deseg.; prickles less hooked, leaflets obovate double- 

 serrate, flowers 3-4, peduncles very short, back of sepals bracts and stipules 

 thinly glandular, sepals at length ascending not deciduous till the naked 

 oblong fruit has changed colour. N. Yorkshire. YAR. R. maryina'ta,Wal\T. 

 (R. Iftoadaa'fta, Ripart) ; branches purple, prickles more slender less hooked, 

 leaflets altogether glabrous, glaucous above, pale beneath, veins prominent 

 glandular, flowers 3-4, sepals and fruit much as in R. Bake'ri. Arran on 

 the Clyde, N. Yorkshire, N. Wales, Derry. 



7. R. arven'sis, ffuds. ; bush large, branches long arching or trailing, 

 prickles uniform stout strongly hooked, leaflets eglandular glabrous or 

 slightly pubescent, flowers 1-6, sepals deciduous, styles glabrous connate 

 into an exserted column, fruit ripening late, disk much thickened. 

 Hedges and thickets ; England and Ireland ; fl. June-July. A low trailing 

 plant in its usual form, with the foliage and hooked prickles of R. cani'na. 

 Leaflets glabrous and shining above, rarely downy. Flowers rarely solitary, 

 generally white, scent faint or 0. Fruit naked ; achenes sessile or stalked. 

 DISTRIB. W. and Mid. Europe, from Belgium southd. 



R. ARVEN'SIS proper ; bush 2-3 ft., branches trailing purple glaucous, prickles 

 often very large, leaflets quite glabrous glaucous beneath, flowers white 

 throat yellow, calyx purple, sepals naked on the back short broad reflexed 

 after flowering deciduous not much pinnate, fruit subglobose small, styles 

 glabrous as long as the stamens. R. re'pens, Scop. Common in S. of 



