A LIST OF BRITISH ROSES 31 



are all features of the Canina group. Ley's Hereford specimen 

 has the general characters of the group better marked, but has 

 quite deciduous sepals ; it may belong to B. montivaga Desegl., a 

 Canina form closely connected with the present group. The 

 Graffham, W. Sussex, specimen {Marshall), referred here by 

 Eogers, seems to me out of place, though I feel no certainty, and 

 do not know how to name it, unless it be a short-peduncled form 

 of B. canina var. glaucescens Desv. with sepals less reflexed than 

 usual. If it belongs to this subgroup at all, it may be B. glauca 

 var. salicifolia Vukot., a name given by Dingier to a Cheshire 

 specimen, which I have placed to B. insignis D6s6gi., following 

 Sudre, but which has really more right in the Subcanina subgroup 

 than the Graffham plant. V.-c. 13?, 23, 36?, 40, 78, 79, 88, 

 Co. Antrim ?. 



Leaflets Biserrate. 

 E. glauca var. denticulata Kell. in Asch. & Graebn. Fl. 

 Mitteleur. vi. p. 197. A specimen from Perth (Barclay), which 

 certainly belongs to this subgroup, has close-set, broadly oval, 

 strongly biserrate leaflets, and large obovoid fruit, and is pro- 

 bably referable to this variety. Another Perth specimen much 

 resembles it, but is much less biserrate, its sepals also spread con- 

 siderably, so that it may be a form of B. subcristata, as the 

 collector named it, but I think it is best in the Subcanina sub- 

 group, and by Keller's arrangement it would fall into his sub- 

 division with slightly biserrate leaflets, as a form of his var. 

 diodus. Another, though very different looking form, from 

 Cheshire, which from most of its sepals being reflexed belongs to 

 this subgroup, comes near var. diodus Kell. in its slightly biserrate 

 leaflets. Unless we recognize a subdivision with such leaflets as 

 distinct from one with them fully biserrate, var. diodus should be 

 merged into var. denticulata. V.-c. 58 ?, 88 ?. 



GEOUP CORIIFOLIA. 



Typical specimens ranged under the Goriifolia group should 

 have all the characteristics of that of Glauca, but with hairy 

 leaflets, at least on the midribs beneath. As with that group, a 

 subgroup may be made containing plants with reflexed or spread- 

 ing sepals. Examples may frequently be met with which are 

 intermediate between the Goriifolia and Dumetorum groups in 

 one or more cardinal features, and sometimes there is difficulty in 

 discriminating certain forms from the Villosce. If any one char- 

 acter be insisted on, I think it should be the woolly and in most 

 cases broad head of styles. A tolerably constant character, at 

 least frequent enough to be useful in case of doubt as to the 

 group, is the slender, often rather small, but much hooked prickles. 



SUBGEOUP COEIIFOLI^. 

 Leaflets Uniserrate or nearly so. 

 R. CORIIFOLIA Fries, Nov. Fl. Suec. i. p. 63. As is often the 

 case with tlie older cardinal species, typical examples seem rare. 



