129 



NOTES ON ENGLISH RUBI. 

 By W. 0. Focke, M.D. 



(Concluded from p. 103.) 



15. R. leucandrus Focke. — Under this species I put a bramble 

 which I saw near West Moors and Daggons, Dorset. The sterns 

 are hairy and growing in a high arch, the leaflets pale green and 

 pubescent below, the terminal one ovate or somewhat cordate. The 

 panicle is of moderate size, generally racemose at the top. Rachis 

 and peduncles villous, with a few small prickles. Flowers rather 

 large, white. Sepals reflexed. 



Cont. distrib. N.W. Germany ; at many places abundant. 



16. R. villicaulis Koehl. R. calvatus Blox. — The name is a 

 misleading one, because the stems of the plant are by no means very 

 hairy. It has been given in Silesia, a country where all the other 

 robust brambles have glabrous stems. A dry specimen of R. 

 calvatus Blox., received from Mr. Bloxam himself, is by no means 

 different from R. villicaulis. The Yillicaulis-type comprehends 

 several remarkable varieties, but it is even more difficult to keep 

 them distinct than in the case of R. rhamnifolius. The plant I saw 

 with Mr. Rogers near Bournemouth (Branksome, West Moors, 

 Gore Heatb, Daggons, Buckland) agrees very well, except in the 

 length of the stamens, with a variety common in N.W. Germany. 

 In the Dorset plant the stamens do not exceed the styles, as is the 

 case in the German varieties. A few glandular seta) in the panicle 

 of R. villicaulis are of frequent occurrence. 



Cont. distrib. S. Sweden, Denmark, Germany (disappearing 

 in the southern parts), Belgium, N. France. 



17. ? R. rotundatus P. J. Muell. — Genevier's description of 

 R. rotundatus agrees perfectly with a bramble I saw at several 

 places in Cornwall and S. Devon. Many years ago Mr. Briggs 

 sent me dried specimens asking a name for it. The plant is very 

 remarkable from its long slender prickles and large milk-white 

 petals. It is near Ii. incurvatus, which may be, however, distin- 

 guished by its shorter prickles, smaller pink flowers, and long 

 narrow panicle. I have seen no French specimens of R. rotundatus, 

 and therefore I am not quite sure about the correctness of the name. 

 The plant will be found in several localities of western England. 

 I saw it near the Lizard, Cornwall, and near Plymouth (Shaugh, 

 Bickleigh). Mr. Briggs collected it near Pokesdown, S. Hants, 

 and the Rev. W. R. Linton has sent me a specimen from Shirley, 

 Derbyshire. 



Cont. distrib. of R. rotundatus: France. 



III. Stems arcuate-prostrate, bearing equal strong prickles and adpressed 

 hairs. No glandular seta. 



18. R. rusticanus Mercier. R. discolor W. Exsicc. non W. 

 ot N. Rub. Germ. — The earliest name would be /.'. ulmifolius 



Journal of Botany. — Vol. 28. [May, 1890.] K 



