90 Proceedings of the Koyal Society of Edinburgh. [Sess. 



abundant in YII. Regarding a dwaii" slightly incrusted form from 

 shallow water in Loch Whinyeon, Messrs Groves write : — " A very 

 interesting little plant intermediate between C. eontraria and C. 

 vulgaris, but we think it best placed under the former." The var. 

 hispidula, Braun., occurs in Area YII. 

 The Bryophyta often form a conspicuous portion of the shore flora of 

 the lochs in Areas IV. and VI., very much more so than in any of 

 the other districts. By instituting a careful search for these plants, 

 a very long list might be arranged, particularly in Area IV., which 

 is veritably a bryologist s paradise. 



SPHAGNACE.E. 



Sphagnum intermedium, Hoffni. IV., VI., VII. On boggy shores of 



peaty lochs. 

 Sphagnum cymbifolium, Ehrh. " I.," IV., VI., VII. On boggy shores 



of peaty lochs. 

 Sphagnum acutifolium, Eltrh. " I.," IV., V., VI., VII. Universal in 



one or other of its numerous forms on the boggy shores of peaty 



lochs. 

 Sphagnum cuspidatum, Eltrh. " I.," IV., VI. Frequent in the water 



in bays, etc. of small peaty lochs, as well as on their boggy shores. 



The variety plumosum, Nees. and Hornsch., is less frequent. 

 Sphagnum subsecundum, Nees. " I." IV., VI. In similar habitats to 



the last, but less frequent. Sometimes it occurs in rather deep 



water : instance, Loch Grennoch, where it grows from 2 to 8 



feet deep, mixed with Littorella, etc. (p. 113). 



POLYTRICHACEiE. 



Polytrichum commune, L. This common moorland moss is occasionally 

 very plentiful on peaty shores in all districts. 



Catharinea undulata, Weh. and Molir. IV. A common moss, but it 

 rarely occurs in abundance at the lochs, as it is more or less a 

 terrestrial plant. At Loch Minnoch, however, submersed rocks were 

 abundantly clothed with an aquatic form of it (p. 126). 



DICRANACEiE. 



Dichodontium pellucidum, Sclix). IV., VI. Common on rocky shores of 



lochs in hilly districts. 

 Blindia acuta, B. and S. " I.," IV., V., VII. On Avet or submersed rocks ; 



common about the shores of hill lochs. 



