1909-10.] Flora of Scottish Lakes. 167 



Alopecurus geniculatus, and Polygonum aviculare. The other plants noticed 

 here were — Littorella lacustris, Alisma Plantago, Heleocharis palustris, 

 Juncus etFusus, J. acutiflorus, J. bufonius, var. fasciculatus, Mentha 

 arvensis, Equisetum arvense, Gnaphalium uliginosum, and Potentilla 

 anserina. 



Between Dunfermline and Saline there are two reservoirs at which I 

 had intended to make detailed observations, but was prevented doing so by 

 unfavourable weather, and I have not been able to visit them again. It is, 

 however, of some interest to note that Potamogeten rufescens grows here 

 in great abundance. 



In a small pool at Patricks Walls, which is situated in a hollow sur- 

 rounded on three sides by steep craigs, I saw with a telescope what was 

 probably Nymphaea intermedia, but could not reach it on account of bog. 

 I am led to record these observations because neither of these plants is 

 common in Fife, but tlie latter and a variety of the former occur in a locli 

 on the Cleish Hills, a few miles to the north. 



Loch Glow is situated in an open, wind-exposed position on the Cleish 

 Hills (fig. 106). These hills are for the most part covered with a grass-like 

 formation of plants, below which in many places there is peat. The loch is 

 the largest of a series of four ; it is f mile long by ^- mile broad, and is 

 situated at an elevation of 900 feet above sea level. The original loch has 

 been deepened by the construction of a short dam at the east end, and it is 

 now used as a reservoir. The water is clear, but slightly peaty. The north 

 shore is rocky, stony or more rarely sandy, and the south shore is mostly 

 peaty. A few leaves of Littorella lacustris, that had been washed upon tlie 

 shore, were the only evidence of the existence of submersed aquatic plants 

 in the locli that I could discover without the aid of a boat, wliich at the 

 time of my visit was out of repair. Marsh plants also are practically 

 absent. It would be reasonable to expect a number of submerged plants in 

 this loch, as Black Loch, which drains into it, has several species. The shores, 

 however, are scarcely suited for the development of a marsh flora. 



Black Loch, recently mentioned, is a small sheet of water about h mile 

 west of Loch Glow, and is surrounded by hills. The water is somewhat 

 peat}^ and there is scarcely any shore save a few stony places here and there, 

 as the grassy moor terminates in a bank at tlie water's edge. There is a 

 thin association of Phragmites conmiunis stretching along tlie south shore 

 (fig. 107). Carex rostrata occurs in patches all around the margin, but 

 particularly at the west end, and there are small associations of E<iuisetum 

 limosum. Nymphaea intermedia occurs abundantly' at the west end. 

 Myriophyllum alterniflorum, Potamogeton perfoliatus, and P. prailongus are 



