1909-10.] Flora of Scottish Lakes. 91 



Dicranella squarrosa, Schp. IV. Often abundant on the wet boggy 

 shores of hill lochs. D. heteromalla, Sclip., is also frequent, but on 

 drier ground. 



Dicraniim fuscescens, Turn. IV. Common on rocks of the shores of 

 hill lochs. 



Dicranum Scottianum, Turn. IV. Habitat as above, but less common. 



FISSIDENTACEJE. 



Fissidens adiantoides, Hediv. " I.," IV. Often abundant in wet places 

 on rockj^ shores. 



GRIMMIACE.E. 



Grimmia apocarpa, Hechv. IV., VI. Common on the dry parts of 



littoral rocks. 

 Grinnuia apocarpa, Hediv., var. rivularis, Web. and Mohr. IV., VI. 



Frequently abundant on wet and submersed rocks, occasionally 



down to 5 or 6 feet deep. In the other Areas it is scarce at 



the lochs. 

 Rhacomitrium lanuginosum, Brid. IV. Often a conspicuous object 



upon rocks of the shores. 

 Rhacomitrium heterostichum, Brid. IV, Various forms of it are 



common in similar situations to the last. 

 Rhacomitrium aciculare, Brid. " I.," IV., V., VII. Frequent upon wet 



and submersed rocks, but sometimes only near the embouchure of a 



burn. 

 Rhacomitrium protensum, Braun. IV. Sometimes abundant on wet 



rocks. When luxuriant, as at Loch Dungeon, it has a very pleasing- 

 appearance. 

 Hedwigia ciliata, Elirh. IV. The type and the var. leucophsea, B. and 



S., frecjuently cover the syenite rocks that abound upon the shores, 



or crop out of the water as little islands. 



TORTULACEiE. 



Trichostomum tortuosum, Dixon. IV. Occasionally abundant on the 

 littoral rocks of hill lochs. 



ORTHOTRICHACEJE. 



Orthotrichum rupestre, Schleich. IV., VI. A common moss on rocks 

 about the shores of lochs in hilly districts. 



