A LIST OF BRITISH ROSES 55 



ANALYTICAL KEY. 



The subdivisions of the subjoined key are lettered in alpha- 

 betical order, in capitals for sections and subsections, and in small 

 type for groups and subgroups, to correspond with the letters 

 which follow the names of the sections, &c., after their clavis 

 characters. For the sake of brevity, both in the key and the 

 index which follows it, the names of the species and varieties are 

 given without any indication of their rank, and without authors' 

 name, except where ambiguity might arise from the omission. 



Key to Sections and Subsections. 



(Prickles very numerous, of all lengths 

 SECT. PIMPINELLIFOLI^ (C) 

 Prickles either uniform, or only here and there mixed with acicles, 

 which do not run into the main prickles 2 



I Styles combined into a long, glabrous column, longer than the 

 stamens ; sepals entire or nearly so... SECT. SYNSTYLiE (A) 

 Styles free, or only united into a short column ; sepals pinnate ... 3 

 (Prickles stout-based, hooked; upper stipules and bracts not much 

 dilated ; peduncles long, somewhat hispid-glandular ; disc very 

 prominent ; stigmas usually in an elongate head 

 SECT. STYLOS^ (B) 

 Prickles very rarely conspicuously stout-based ; upper stipules and 

 bracts greatly dilated ; peduncles short or moderate, smooth or 

 hispid-glandular; disc flat or somewhat conical; stigmas in a 



flattish or hemispherical head (SECT. CANINiE) 4 



/Leaflets with numerous, conspicuous, sticky, scented, subfoliar glands; 

 stems often with acicles below inflorescence or scattered elsewhere 

 4- SUBSECT. RUBIGINOS^ (G) 

 Leaflets not glandular, or if decidedly glandular, then stem is with- 

 in out any admixture of acicles 5 



/Leaflets glabrous, or if pubescent, then rarely also biserrate or with 



hispid-glandular peduncles SUBSECT. EU-CANIN^ (E) 



5 -{Leaflets almost always biserrate, densely softly tomentose, or if less 

 so or glabrous, then peduncles hispid-glandular 



SUBSECT. VILLOSiE (F) 



A. SECTION SYNSTYLiE. (See p. 3.) 



J (Leaflets uniserrate 2 



I Leaflets decidedly biserrate hiserrata. 



2 (Peduncles hispid-glandular 3 



jPeduncles smooth erronea 



g j Stem with short acicles between the main prickles gallicoides. 



(Stem without acicles 4 



. (Leaflets and fruit small, narrow oblong Melvini. 



(Leaflets oval"; fruit ellipsoid,- ovoid, or subglobose 5 



g ( Fruit ellipsoid ; leaflets usually oval or elliptical ovafa. 



(Fruit subglobose or ovoid; leaflets oval or broadly so 6 



* Throughout this paper and key I have used the words "oval" and 

 " ovoid " to express relatively shorter and broader figures than " elliptical " and 

 "ellipsoid," without intending to imply necessarily any other difference in 

 shape. 



