1909-10.] Flora of Scottish Lakes. 123 



Potainogeton obtusifolius, Alisma Plantago, Callitriclie stagnalis, Ranunculus 

 Lenormaiidi, Scirpus sylvaticus, and Thalictrum flexuosura. — J. M'A.] The 

 Bryophytes are scarce or altogether absent on many parts of the shore, 

 excepting in boggy places, where the usual forms, such as species of 

 Sphagnum, etc., abound. The upper portion of the loch is more favourable 

 for the growth of these plants, but even there they do not form a conspicuous 

 feature of the shore. The following were observed in fair abundance : — 

 Grimmia apocarpa and its var. rivularis, Rhacomitrium aciculare, Bryum 

 alpinum, Amblj^stegium hlicinum, Bartramia ithyphylla, Camptothecium 

 sericeum, Hypnum cupressiforme, Xeckera crispa, Philonotis fontana, Blasia 

 pusilla, Jungermannia bantriensis, Pellia epiphylia, etc. [Bryum filiforme, 

 Hypnum sarmentosum, H. Patientia3, Cr\'ph{ea heteromalla, Grimmia 

 subsquarrosa, G. Hartmani, and Orthotrichum rivulare grow on stones by 

 the shore, whilst several species of Sphagnum are abundant. Leskea 

 polycarpa, Helicodontium pulvinatum, and Scleropodium caespitosum 

 flourish on tree trunks in Kenmure Holms. — J. M'A.] 



[Near the embouchure of the Shirmers Burn, which is about 2 miles 

 from the head of Loch Ken, on the east side, there is a bank in the loch over 

 which the water is quite shallow. On this raised portion of the bottom 

 submersed plants can be easil}'' seen when sailing over it in a boat. Between 

 Ken Bridge and Loch Ken there is a great extent of alluvial ground upon 

 either side of the River Ken, yielding a large quantity of excellent meadow 

 ha}', and that without manure, to the people of New Galloway and the 

 farmers on the Kenmure estate. In time of flood all this extensive flat is 

 covered with water by the overflowing of the River Ken and by the 

 danniiing back of the water of Loch Ken, caused by the peculiar way in 

 which the River Dee enters Loch Ken immediately below the railway 

 viaduct. This river enters the loch at such an angle that its powerful 

 current is directed ao^ainst the more gentle downward flow of the loch, and 

 this causes the damming back of the water of Loch Ken as far north as the 

 Kenmure Holms, which are thus enriched by a valuable deposit of mud every 

 time that a flood occurs. This accounts for the luxuriant vegetation at the 

 head of the loch referred to on p. 121. — J. M'A.] 



Barscobe Loch is about 3 miles X.E. of New Galloway. It is about 

 I mile long, and is situated in the midst of a treeless, hilly grass moor, 

 wliich everywhere, excepting where bog occurs, meets the water, so that 

 there is no shore. The water is quite clear and scarcely peaty. On 

 the east side there are thin beds of Carex rostrata, and on the west side 

 associations of Scirpus lacustris and Carex rostrata. On grassy bogs wliicli 

 occur here and there at the margin the usual marsh plants are found. The 



