142 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



simple, except that here and there a toothlet may be detected. Both 

 have the leaves sparingly liairy and quite eglandular, except that on 

 the midrib an occasional gland may be detected. The main sepals in 

 both have some slender pinnae, and in both the pedicels and fruits are 

 pretty thickly clothed with glands and acicles. Both have glaucous 

 (blue-green) leaves, and their prickles are similar in form. In the 

 second the fruit as I saw it on 29th July, before it had begun to 

 shrivel, was remarkable for its lengthened shape, ovoid prolonged or 

 in some cases obovoid, quite different from any other form which I 

 have seen. The mature fruit is not so striking. At some distance, 

 but in the same locality, was another clump, somewhat similar to the 

 first, but with more double teeth and with leaflets broadly elliptical, 

 rounded at both ends and occasionally almost orbicular. The leaves 

 were strongly tinged with red even at that early part of the season. 

 Still a fourth bush or clump differed in its leaves with composite 

 glandular serration and with numerous subfoliar glands. All four, 

 however, appear to me to be variations of R. pirttpinelli folia x 

 tomentosa Sm. Mr and Mrs Oorstorphine are to be congratulated on 

 the discovery of these interesting forms." — W. Barclay. 



Rosa involuta ^m., forma = R. spinosissima Jj. x tomentosa Sm. 

 August 18, 1914. This is the rose described by Major Wolley-Dod in 

 List of British Roses, p. 9, under the name of R. spinosissima (agg.) 

 xdumetorum (agg.) or (coriifolial agg.) f. Margerisoni f. nov. The 

 specimens enclosed are from a plant in my garden, sent me about 7 

 years ago by Mr Margerison, who discovered it in Knipe Wood, 

 Kettle well, N. Yorks. I formerly sent a moderate supply to the 

 Watson Club, and what I now send should enable all who take an 

 interest in roses to obtain a specimen. To the note published in the 

 28th Annual Report of the Watson Club I have nothing to add except 

 that I am more convinced than ever that this rose belongs, not to the 

 hibernica, but to the involuta group. — W. Barclay. " I presume that 

 this is identical with the rose described by Wolley-Dod under the 

 cumbersome form of R. spinosissima (agg.) x dumetorum (agg.) (or 

 Goriifolia 1 agg. ) f . Margerisoni, in his List oj British Roses. How 

 much more satisfactory would it have been had Wolley-Dod simply 

 described this as x Rosa Margerisoni ! These excellent specimens 

 afford a better opportunity of studying this rose than the late-gathered 

 specimens contributed by Mr Druce in 1911. That this is a spinosissima 

 hybrid is, I believe, uncontroverted ; the only point on which opinion 

 is divided is as to the second parent. As to R. tomentosa or R. omissa 

 entering into the composition of this rose, I am quite unable to believe. 

 The presence of a tomentosa form would be revealed by a glandular 

 development, whereas this rose is practically eglandular. The very 

 narrow stipules are against the view of R. coriifolia being the second 

 parent, and I think Wolley-Dod's first alternative R. spirtosissima x 

 dumetorum is the correct solution. The examples have a certain 



