100 NOTES ON ENGLISH RUBI. 



northern form. I possess a dried cultivated specimen from the 

 Cambridge Garden, and I have seen dried specimens from Scotland, 

 and the northern and middle parts of England. 

 Cont. distrib. Scandinavia, N. Germany. 



3. E. sulcatus Vest. — In general appearance this species 

 resembles very much the R. subercctus, but it may be easily 

 distinguished by its strong prickles confined to the angles of the 

 stem, by the short but distinct foot-stalks of its basal leaflets, and 

 by its large black fruits. It is a taller plant than R. suberectus, the 

 stems are more angular, and their leaves always quinate; the 

 flowering branches and racemes are much longer than in the allied 

 species. The only dried English specimen I have seen was collected 

 by Mr. Archer Briggs, " By Holsworthy and Thornbury Boad, 

 N. Devon, 13th July, 1885." 



Cont. distrib. S. Sweden, Denmark, Germany, Austria, Switzer- 

 land, N. Italy, E. (and W.?) France. 



4. K. plicatus W. et N. — A northern plant, which I have not 

 met with on my excursions in the southern counties. I have seen 

 a dried specimen, gathered by the Be v. W. Moyle Bogers " on wet 

 bushy ground in the Lower Bridgerule Bog, N. Devon, Aug. 1882." 

 In the northern parts of England it is common ; the plant may also 

 be expected to occur on the high hills of the southern counties. 



Cont. distrib. S. Scandinavia, Denmark, Germany, Belgium, 

 N.E. France. In Switzerland and Tyrol it is a mountainous species. 



5. B. nitidus W.etN. — This is a somewhat changeable species; 

 it resembles R. plicatus, but keeps in all its varieties its peculiar 

 appearance. The typical German plant has a compound panicle 

 armed with strong hooked prickles. A wbite-fiowering variety is 

 the R. hamulosm Lefv. et Muell. (R. nitidus albifiorus Wh.). The 

 typical plaut grows often in brooks, or on the banks of small streams 

 and rivulets. The strongest and most decidedly hooked prickles 

 seem to be the product of a loamy soil. On a sandy ground the 

 armature of the panicle is much weaker. The R. nitidus I have 

 seen with Mr. Bogers and Mr. Briggs in Hants, Dorset, and 

 Devonshire is generally taller than the German plant ; its inflore- 

 scence is narrower ; its prickles are less numerous and falcate (not 

 hooked) ; its leaflets acuminate, not simply acute. Notwithstanding 

 these differences, I see no clear limits between this British form, 

 which I think the French botanists might call R. integribasis F. J. 

 Muell., and the German type, which has not always the striking 

 characters of the hamulosus -like forms. Much more different is 

 Genevier's R. nitidus, called by me R. holerythros, which I believe 

 will prove to be a distinct species or subspecies. I have seen living 

 plants of R. nitidus near Sway, S. Hants; Branksome, "West Moors, 

 Daggons, and Alderholt, Dorset ; Shaugh Bridge, Bickleigh Vale, 

 and Plymbridge Boad, S. Devon. 



Cunt, distrib. S. Sweden, Denmark, W. Germany, France. 



6. B. opacus Focke. — This form agrees with R. nitidus in the 

 stamens longer than the styles, and embracing the young fruit. 

 The leaves are usually larger than in R. nitidus, and the younger 



