1909-10.] Flora of Scottish Lakes. 95 



Nardia emarginata, Gr. and Benn. ( = Marswpella emarginata, Dum.). 

 " I.," IV. On wet rocks and shores of liill lochs, and often in the 

 water ; rather less abundant than the last mentioned. 

 Nardia scalaris, Gr. and Benn. IV. On wet sandj^-peaty shores of hill 

 lochs, often abundant. 



The following species are frequently found covering wet places about 



lochs, particularly on shady banks, under rocks, etc., in all the Areas, 



but especially in IV. : — Pellia calycina (Tayl.), P. epiphylla, Lindb., 



Conocephalus conicus, Dum., and Marchantia polymorpha, L. The last 



. mentioned is often found in the water of bogs as well as in drier places. 



Several species of Jungermannia are met with on the shores of the 

 more elevated lochs, but always in small quantities. 



Amongst the mountains of Area IV. many lochs are bordered 

 more or less by rocks which are frequently covered in a most prolific 

 manner with masses of lichens. A description of the flora of these 

 lochs would be incomplete were it not, under such circumstances, to 

 notice the most predominant and conspicuous species of these lichens. 

 They are as follows : — Platysma glaucum, JSfyl., Cetraria aculeata, 

 Fr., C. muricata, AcJt., Parmelia lanata, Wallr., P. omphalodes, X., 

 Alectoria jubata, Nyl., Lecanora tartarea, AcJc, Sphserophoron 

 coralloides, Pers., Lecidea geographica, Schcer. (p. 101). 



ALGiE. 



A few very abundant species that were noticed : — 



Batrachospermum moniliforme, J?o^/i. " I.," IV. Abundant; very scarce 



in the other Areas. 

 Batrachospermum vagum, i^o^/i. I. Scarce. IV., VI. Frequent; very 



scarce in the other Areas. 

 Enteromorpha intestinalis. Link. " III.," V., VII. Particularly plentiful 



in Kilconquhar Loch and Loch Fitty. 

 Ulothrix ?equalis, Kiltz., and its var. cataeniformis, Rahenlt. In all the 



Areas, but particularly in IV. 

 Cladophora fracta, Kiltz. " II.," VII. Occasionally very abundant. 

 Cladophora crispata, Ruth. VII. Occasionally abundant. 

 Cladophora flavescens, Ag. V., VII. Sometimes very abundant in 



lochs that receive the drainage of villages. 

 Cladophora canalicularis, Roth. VI., VII. Abundant ; less so in the 



other Areas. It covers stones and rocks about the shores of lochs 



that receive the drainage of villages, farms, and cultivated land. 



It is often covered with a prodigious quantity of diatoms, chiefly 



