26o PROCEEDINGS COTTESWOLD CLUB 1914 



greenhouses and gardens ; but it grows on rocks to the west 

 of the Severn in situations where it may be native. Mountain 

 species Hke Rhacomitnuni lanuginosum and R. fascicular e are 

 probably casuals in this County. Near Cheltenham several 

 species are found on slag on the railway-embankments, and 

 they are evidently recent introductions, though they are 

 maintaining themselves well in this habitat. These are 

 Rhacomitnum lanuginosum, R. canescens, R. fasciculare, and 

 Ptychomitrium polyphylluni. Sometimes mosses are found in 

 situations which are not suitable for their growth, and where 

 they soon disappear ; for example, Hypnum uncinatum, which 

 appeared one year on Cleeve Hill, near Cheltenham, and the 

 Oolitic Moss Tortula pusilla, found by the Rev. Augustin Ley 

 near Mitcheldean. Another doubtful native is Grinimia 

 commutata, which, so far, has only been found on roofs in the 

 Forest of Dean. 



There are several mosses which never bear fruit in Britain, 

 others in which the fruit is rare. In the case of those which 

 rarely bear fruit, I have indicated, sometimes by the abbrevia- 

 tion c. fr. {cum fructu), that fruit has been found in this 

 County. Three common mosses for which there is no record 

 of fruit in this County are Barbula lurida, Encalypta strepto- 

 carpa, and Leucodon sciuroides. 



The publications and works dealing with Gloucestershire 

 Mosses are the following : — 



G. H. K. Thwaites. — " List of Mosses Found in the Neighbourhood of 

 Bristol." Annals of Natural History. Series L Vol. xii. 1843. 



H. Beach. — " The Mosses of the District." Proceedings of the Chelten- 

 ham Working NaturaUsts' Association. Nov., 1861. 



W. W. Stoddayt, F.G.S. — " Geological Distribution of Some of the 

 Bristol Mosses." Proceedings of the Bristol Naturalists' Society. New 

 Series. Vol. I., 1874. 



[This list is evidently inaccurate, and I have made no use of it. — 

 H.H.K.] 



G. Holmes and E. J. Elliott. — " The Mosses and Hepaticae of the 

 Forest of Dean." Hardwicke's Science Gossip. March, 1885. 



Augustin Ley. — "The Botany of Mitcheldean District." Proceedings 

 of the Woolhope Naturalists. May, 1887. 



W. A. Shoolbred. — " The Mosses of the lower part of the Wye Valley 

 in West Gloucestershire." G. Holmes. " Notes on some Mosses of the Stroud 

 District." The Fauna and Flora of Gloucestershire by C. A. Witchell and 

 W. B. Strugnell. 1892. 



