20 FLORA OF THE BRISTOL COAL-FIELD. 



clusively confined in North Somerset to the southern 

 slopes of Brean Down. Purn Hill is an elevation 

 of the carboniferous limestone, situated inland to 

 the S. E. of Brean Down, at a distance of about 

 two miles from that promontory ; and the abundant 

 occurrence there of H. polifolium m^arks a some- 

 what important extension of its previously ascer- 

 tained range in the vice-county of North Somerset. 

 On the same hill several other interesting species, 

 none of them very common in the district, were 

 observed, amongst which may be named Erodium 

 moschatum^ TrifoUum scabrum, Spiranthes autuin- 

 naliSj and Avena fatua^ h. intermedia {Lindgr.). 



273* Ruhus pallidus, W. and N. Eeprinted from the 

 "Journal of Botany," April, 1889, p. 118. 

 In face of so much uncertain nomenclature and vary- 

 ing opinion on the identity of British Rubi, I have 

 refrained from furnishing supplemental notes on the 

 brambles of the Bristol Coal-field since the publi- 

 cation of the " Flora," although some forms at that 

 time not clearly understood have now been satis- 

 factorily made out, two or three new species 

 gathered and identified, and many additional lo- 

 calities recorded. An amount of general interest 

 attaches, however, to one of these later discoveries, 

 and it may not be premature to offer a few remarks 

 on the occurrence of R. pallidus W. and N. in 

 North Somerset, especially as I believe this species 

 has only once been previously observed in Britain, 

 namely, in Norfolk, by the Bev. E. F. Linton (see 

 ''Reports of the Botanical Exchange Club," 1885, 

 1886). The plant is strikingly handsome. On the 



