12 A REVISED ARRANGEMENT OF BRITISH ROSES 



but not biserrate, and our forms are practically simply so, fruit 

 larger, and styles usually hispid but varying to glabrous. Glabrous- 

 styled forms have been labelled B. leucochroa by British authors, 

 but their styles, prickles, and general habit serve to distinguish 

 them. V.c. 3, 10 ?, 23, 32, 34, 36, 40, 55 ?, m, 57, 58, 62, 67, 70. 



f. imitata (Desegl.). Leaflets very thinly pubescent, fruit elon- 

 gate-ellipsoid, and thinly hispid styles. V.c. 36 ?. 



C. Subgroup Aciculatse. 



Like the last Subgroup, but with biserrate leaflets. 



B. dumetorum var. aciculata Rouy (sub B. canina). By Rouy's 

 key this should have long very prickly flowering bmnches, slender 

 straightish prickles, small biserrate leaflets, hairy on primary nerves 

 peduncles and base of fruit glandular-hispid and fruit ovoid. My 

 specimen is peculiar for the presence of small acicles and gland- 

 tipped setai towards the ends of its flowering branches. V.c. 17 ?. 



Var. mercica W.-Dod ined. Leaflets rather large, dark bluish 

 green, more or less pubescent on both sides, peduncles usually rather 

 strongly glandular-hispid, and sometimes also the broadly ovoid fruit, 

 styles hispid. Forms with smaller leaflets, narrower fruit and 

 villous styles occur. It has been miscalled B. ccesia in Britain. 

 V.c. 57. 



2. Primary Group of R. glauca. 



The important characters are short peduncles, broad bracts and 

 stipules, or at least auricles, and a broad hemispherical, rarely spherical, 

 head of very villous stigmas, which hardly ever project above the 

 narrow disc. 



Secondary Group of R. Reuteri. 



This covers the glabrous-leaved varieties. The leaves are often 

 o-laucous, uniserrate or biserrate, and with or without subfoliar 

 glands. The 3'oung shoots, stipules, and bracts are often reddish. 



A. Subgroup Reuteri. 



In these the sepals rise above the disc, or are even suberect after 

 flowering, and persist till the fruit ripens. 



R. Reuteri God. = i?. glauca Vill. and B. Crepiniana Desegl. 

 Prickles rather small, leaflets simply serrate, without subfoliar glands, 

 petioles usuallv eglandular and unarmed, peduncles eglandular, and 

 fruit large and ovoid. V.c. 16?, 34, 38, 40, 41, 57, 58, 59, 62, 65, 

 67, 78, 88, 91, Antrim?. 



f. intricata (Gren.)=var. transiens Gren. The only important 

 difference is the glandular-hispid peduncles. V.c. 40, 57, 58, 98. 



Var. siihcristata Baker =i^. complicaia Gren. Leaflets more or 

 less biserrate, very variable in size, petioles glandular, peduncles 

 smooth, and fruit as in the type. Sometimes the sepals are very 

 long persistent, so that the fruit resembles that of B. mollis Sm., 

 and I have seen specimens so named. V.c. 17, 34?, 36, 38, 41, 43, 

 58, 65, 67 or 68, 69, 78, 79 ?, 88, 106, Down. 



f. myriodonta Chr. is a strongly biserrate form, with more glan- 

 dular petioles. V.c. 58, 106, Down. 



