134 NOTES ON ENGLISH EUBI. 



VI. Stems arcuate-prostrate or quite prostrate, bearing pncldes, aciculi, 



and glandular sette of different sizes. Basal leajlets stalked. 

 a. Intermediate acicidi scattered. 



42. R. aruTABiLis Genev. — Frequent around Plymouth, where I 

 saw it with Mr. Briggs. 



Cont. distrib. W. France. 



43. R. Bloxa.mii Lees. — Frequent around Bournemouth, in 

 S. Hants, and Dorset. It is closely allied to R. thyrsijlorus W. et N., 

 and perhaps the two species may run together. 



Cont. distrib. According to Genevier, W. France. 



44. R. rosaceus W. et N. — I have seen dried English specimens 

 only, but from different parts of the country. 



Cont. distrib. N.W. Germany, Belgium, France (following 

 French authors, I have seen no French specimens). 



b. Prickles, acicidi, and scUe of every size mixed. 



45. R. hystrix W. et N. — In dry specimens it is difficult to 

 trace the limits between this species and R. Koehleri. I have not 

 seen living plants of either species in England. 



Cont. distrib. N.W. Germany (very local !). 



4C. R. Koehleri W. et N. — See R. hystrix. 



Cont. distrib. The typical plant occurs frequently in the central 

 part of Germany, from the Russian to the Belgian frontier. 

 Varieties or nearly-allied forms are spread over the whole of Central 

 Europe. A small variety is R. Reuteri Merc. 



47. R. viridis Kaltenb. R. pallidas of many English authors. — 

 It is easily distinguishable from the true R. pallidus by the abundant 

 intermediate aciculi on the stem and the rachis. Mr. Briggs 

 showed me a plant near R. viridis in the Common Wood, Bickleigh, 

 S. Devon. 



Cont. distrib. W. Germany. 



48. R. hirtus W. K. (aggregate). — In S. Devon I have seen 

 several forms of this group. It would be a useless attempt to 

 arrange these English plants under one or the other continental 

 subspecies or varieties. 



Cont. distrib. of the hirtus group. Western, Central, and South- 

 ern Europe ; Asia Minor. 



VII. Stems arcuate-prostrate or quite prostrate, armed in a various 



manner. Basal leajlets nearly sessile. 

 A. Prickles, aciculi, and seta unequal and very abundant. 



49. R. diversifolius Lindl. — Seen at different places in 

 S. Hants and Dorset, near Bournemouth ; Fursdon, S. Devon. 

 Resembles R. Koehleri, but I think it is nearer the Corylifolian 

 group. The R. dumetorum ferox W. is not quite the same, but 

 I think my R. myriacanthus will fall under R. diversifolius. 



Cont. distrib. N.W. Germany (R. myriacanthus). 



