ON THE FLORA OF SHETLAND 239 



give a list of the plants seen growing on the turf roof of a byre at 

 the croft of Setter, near Walls. 



Cardamine pratensis. 

 Cerastium triviale. 



,, tetrandum. 

 Stellaria media. 

 Sagina procumbens. 

 Potentilla silvestris. 

 Hydrocotyle vulgaris. 

 Galium saxatile. 

 Scabiosa Succisa. 

 Solidago Virga-aurea. 

 Leontodon autumnalis. 



Galeopsis Tetrahit. 

 Rumex Acetosella. 

 Juncus supinus. 



,, bufonius. 



,, squarrosus. 

 Agrostis vulgaris. 

 Aira flexuosa. 

 ,, praecox. 

 Poa annua. 

 ,, pratensis. 



I may add, in conclusion, that the few observations on 

 the scenery past and present apply more particularly to the 

 peat and heather tracts. On the limestone, clay-slate, etc., 

 where the hills are clothed chiefly with coarse grasses, the 

 general coloration is of course much brighter ; but there is 

 the same monotony as regards trees and shrubs. At the 

 same time one often comes across charming burn-side fore- 

 ground studies, while the grandeur of the coast scenery 

 alone more than compensates for any shortcomings that 

 some may find in the inland landscape. 



THAMES DITTON, May 1907. 



A CONTRIBUTION TO A FLORA OF ST. KILDA : 

 BEING A LIST OF CERTAIN LICHENS, 

 MOSSES, HEPATICyE, AND FRESH-WATER 

 ALG^:. 



By C. GORDON HEWITT, M.Sc. 



DURING the visit to St. Kilda, in July 1906, which I made 

 in order to study the insect fauna of that isolated volcanic 

 rock, I also collected a few lichens, algae, and bryophytes, 

 with the hope of assisting in the completion of the flora 

 of that island, as these groups had not been studied to my 

 knowledge. 



The lichens were kindly identified by my friend Dr. O. V. 



