264 THE JOURNAL OF BOTANY 



exist as it were on sufferance. . . . How and whence they 

 arrived it is not quite easy to say. It is extremely unhkely that 

 any one of them represents the original flora of the time when 

 the heds were exposed from which the stones themselves were 

 derived. In all probability the spores were in most cases carried 

 by westerly winds from the granite rocks of the Cornish peninsula, 

 in comparatively recent times. For the greater number of the 

 mosses observed, however, which ai^e frequent and widely dis- 

 tributed species, there is no need to seek such an explanation." 

 Mr. Jackson's record of the rare Ejphemcrwn recurvifolium in two 

 places at Weston, near Welford, is interesting, and PMlonotis 

 ccsspitosa flowering in a bog near Bagshot, Hungerford, is a 

 noticeable addition to the county, while Seligeria paucifolia in 

 the hanging wood on the chalk escarpment called Eivar Copse, 

 near Inkpen, Hungerford, Leptodontium flexifolium and Splach- 

 num ampullaceum on Greenham Common, Newbury, and the 

 fruiting Hypnum cordifolium growing in the marsh near Bagshot 

 with Fhilonotis ccespitosa are also outstanding species. 



Sphagnum intermedimn Hoffm. Greenham Common (/.). 



TetrapJiis pellucida Hedw. Near Boxford, Newbury {Miss 

 Stansfield) ; Brimpton (/. & C). 



Catharinea undulata var. minor Web. & Mohr. Finchamp- 

 stead Woods (/.). 



Polytrichum namim Neck. Plentifully in a fallow field near 

 Burridge Heath, Great Bedwyn, fruiting freely in several places. — 

 P. ju7iiperimim Willd. Very rare on the sarsen stones at Ashdown 

 Park, Lambourn. — P. commune L. Snelsmore Common, Newbury; 

 abundant on commons near Newbury (/.). 



Seligeria paucifolia Carruth. On a small lump of chalk in 

 the hanging wood called Eivar Copse, near Inkpen, Newbury ; 

 Mr. H. H. Knight found this species on White Horse Hill, 

 Uffington, where it had previously been observed by the Eev. 

 W. O. Wait, as recorded by Mr. G. C. Druce in the Victoria 

 County History of Berkshire. It seems to be the only Seligeria 

 that has been found in the county. — S. calcarea (B. & S.) is 

 recorded for the bordering counties of Hampshire, Bucks and 

 Surrey, and should be looked for in the Berkshire chalk pits. 



Archidium alternifolium Schp. By Queen's Mere, Finchamp- 

 stead, near Wokingham {Miss E. Armitage). 



Dicranoweisia cirrata Lindb. This common moss occurs 

 plentifully and fruits on the sarsen stones at Ashdown House, 

 Lambourn. 



Campylopus pyriformis Brid. Greenham and Snelsmore 

 Commons, Newbury {J. & C.) ; also on tree stumps near Shal- 

 bourne, Hungerford. 



Dicranum scoparium Hedw. Not common on the sarsen 

 stones at Ashdown Park. 



Leucobryiim glaucum Hampe. Greenham and Snelsmore 

 Commons (/. d G.) ; Finchampstead {Miss Armitage). 



Fissidens adtantoides Hedw. Compton Downs, Newbury 

 {J. d G). 



