1909-10.] . Flora of Scottish Lakes. 135 



considerably larger, and has an irregular outline. Its water is rather peaty. 

 It is picturesquely surrounded by low hills, some portions of which are 

 cultivated, while the remainder consists either of moor or wood ; the margin 

 of the loch is also well wooded. It is more or less surrounded by a sedge or 

 reed marsh, composed chiefly of the following species : — Scirpus lacustris, 

 Phragmites communis, Equisetum limosum, and Carex rostrata. In the 

 water beyond this zone, as well as mixed with it, Potamogeton natans, P. 

 perfoliatus, Sparganium natans, Castalia speciosa, and Apium inundatum 

 are the dominant plants. The last-mentioned species is particularly 

 abundant, and grows luxuriantly in water 6 or 7 feet deep, reaching the 

 surface from that depth, although not fruiting freelj^ in such deep water. 

 A number of common plants also occur, but less abundantly. 



Clonyard Loch is { mile south-west of the last mentioned. It is 

 smaller than Barean Loch, but the features are somewhat similar. It 

 is surrounded by a sedge or reed swamp, composed chiefly of Scirpus 

 lacustris and Carex rostrata ; there is also an association of Typha latifolia, 

 as well as minor colonies of Phragmites communis and Equisetum limosum. 

 In the water outside the swamp zone there is a broad belt of Castalia 

 speciosa. Other abundant plants are Iris Pseud-acorus, Sparganium 

 ramosum, and Ly thrum Salicaria. 



White Loch is the largest of this group, being about i mile long bj^ i mile 

 broad. It is h mile south-east of the last mentioned, and the public road 

 from Douglas Hall to Dalbeattie adjoins its western shore. The neigh- 

 bouring district is a mixture of moor, cultivated land, and plantation, 

 and the water is rather peaty. Where not marshy, the shores are 

 sandy or stony, with a few syenitic rocks. It is little more than 100 

 feet above the level of the sea, which is about a mile distant; and 

 although distinctly lowland in general aspect, yet some plants usually 

 associated with peaty highland lochs flourish here alongside those commonly 

 found in lowland lakes. This is probably because the loch has not been 

 interfered with, whilst the surrounding moor has been brought under 

 partial cultivation. Phragmites communis forms a belt around a consider- 

 able portion of the loch, especially on the east. On the west side there is a 

 large association of Typha angustif olia, as well as smaller groups of the same 

 at other parts of the loch. In the water, beyond the Phragmites and Typha, 

 associations of Scirpus lacustris occur, whilst Carex rostrata and Equisetum 

 limosum occupy other sites. ]\Iinor plants of the marsh formation are — 

 Heleocharis multicaulis, Comarum palustre, Alisma Plantago, Juncus 

 acutiflorus, J. lamprocarpus, J. eftusus, Lythrum Salicaria, Ranunculus 

 Flammula, Mentha sativa, Pedicularis palustris, Spirwa Ulmaria, Scutellaria 



