Flora of Scottish Lakes. 
167 
1909-10.] 
Alopecurus geniculatus, and Polygonum aviculare. The other plants noticed 
here were — Littorella lacustris, Alisma Plantago, Heleocharis palustris, 
Juncus effusus, 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 the latter and a variety of the former occur in a loch 
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 J mile long by J 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 the 
shore, were the only evidence of the existence of submersed aquatic plants 
in the loch that I could discover without the aid of a boat, which 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 J mile 
west of Loch Glow, and is surrounded by hills. The water is somewhat 
peaty, and there is scarcely any shore save a few stony places here and there, 
as the grassy moor terminates in a hank at the water’s edge. There is a 
thin association of Phragmites communis stretching along the 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 Equisetum 
limosum. Nymphaea intermedia occurs abundantly at the west end. 
Myriophyllum alterniflorum, Potamogeton perfoliatus, and P. praelongus are 
