I'HF, GKNUS ROSA 29 1 



{2) R. pimpinellifolia X R. duinetorum. Plate XI. 



This also occurred on the Magnesian Limestone in Durham 

 and at different points. None of the bushes bore fruit on 

 August 14th except that figured, and even in this case 95 per 

 cent, had fallen. A careful study of this bush, and com- 

 parison with its neighbours carried out in the field, incline me 

 to consider it as a cross between pimpinellifolia and R. 

 dumetonim {sens, st?:) None of the bushes attained the 

 height of a normal R dunietofU7n, but one very low one 

 straggled over a tremendous area in the manner characteristic 

 of rose hybrids ; in connection with the former observation, 

 the flattening influence of the prevailing north-east winds from 

 the sea must not be lost sight of. Even oaks and ashes yield 

 to it. 



(3) R. pimpinellifolia X R. corii/olia var. fruteiorum. Plate 



XII. 



One of the coast ravines adjoining the Black Hall Rocks 

 protects enormous thickets of R. mollis, R. coriifolia var. 

 frutetoruf/i, Ligvstnim vulgare, and on the sandy patches 

 R. pimpinellifolia var. spinosissima. The coriifolia leaflets 

 were densely clad with a tomentum both above and below, 

 and whilst undeniably more decided in its biserration than 

 usual, the plant could only be assigned to the variety named. 

 Near by grew the present hybrid in the shape of a young 

 bush • attaching due weight to the surrounding plants and to 

 its leaf, prickle and other features, its parents are as given. 

 This rose is i?, hibernica var.- laevigata. I have a plant sub- 

 stantially the same from maritime localities in Norway, 



(4) R. pimpinellifolia x R. riibiginosa var. comosa. Plate 



VIII. 

 The plant in the sketch is from the East Lothian colony of 

 Barclay and was collected in September. At this date its 

 fruit was fully developed and perfectly ripe, as is apparent 

 from the figure, although its good seeds are few. For 

 Barclay's remarks on this hybrid see page 284. 



