Flora of Scottish Lakes. 
137 
1909-10.] 
the following plants about the margins : — Phragmites communis, Carex 
rostrata, Scirpus lacustris, and a few sparse patches of Equisetum limosum. 
Littorella lacustris and Lobelia Dortmanna carpet the bottom in places, and 
there is a fair number of other submerged aquatics. 
Loch Ronald is close to the last mentioned, and is about a mile long. 
There is a plantation of conifers on the east side, otherwise it is surrounded 
by agricultural land or moor. The water is very clear, and the shores are 
stony, flat, and, from a botanical aspect, almost featureless (fig. 59), much 
resembling Loch Ashie in Inverness-shire (ante, p. 1009, fig. 73). Here and 
there a bank of peat 8 or 10 feet high dips into the water without the 
intervention of a shore. There are two small associations of Equisetum 
limosum and one of Scirpus lacustris, all at the south-west end, and groups 
of Carex rostrata in the effluent. I was not able to obtain the use of a boat 
because it had been previously engaged, but a close examination of the 
barren shore for the remains of submersed plants suggested a scarcity of 
vegetation in the water. 
The plants occurring at these lochs, but more particularly at Lochs Black 
and Heron, are as follows : — Littorella lacustris, Lobelia Dortmanna, Isoetes 
lacustris, Myriophyllum alterniflorum, Juncus fluitans, Scirpus fluitans, 
Potamogeton polygonifolius, P. lucens, P. rufescens, P. pusillus, P. obtusifolius, 
Fontinalis antipyretica, F. squamosa, Castalia speciosa, Sparganium natans, 
Scirpus lacustris, Phragmites communis, Equisetum limosum, Heleocharis 
palustris, Carex rostrata, C. filiformis, C. flava, var. lepidocarpa, Juncus 
lamprocarpus, J. acutiflorus, J. effusus, Ranunculus Flammula, Hydrocotyle 
vulgaris, Eriophorum polystachion, Comar um palustre, Polygonum Hydro- 
piper, Mentha sativa, and Senecio aquaticus. There are a few specimens 
of Lythrum Salicaria at Black Loch, but this species will probably not 
succeed in getting well established there. 
Clugston Loch is a small sheet of water, 3 miles south of Kirkcowan, 
with slightly peaty water, and surrounded by moor. The shores are rocky 
or peaty, and beyond colonies of Carex Goodenovii, C. rostrata, and Equisetum 
limosum there are no large associations of semi-aquatic plants, although the 
following are more or less abundant : — Littorella lacustris, Lobelia Dort- 
manna, Juncus fluitans, Apium inundatum, Scirpus fluitans, Fontinalis 
antipyretica, Potamogeton polygonifolius, P. lucens, Castalia speciosa, 
Menyanthes trifoliata, Utricularia intermedia, Equisetum limosum, Carex 
rostrata, C. Goodenovii, C. flava, Juncus lamprocarpus, J. effusus, Caltha 
palustris, Viola palustris, Ranunculus Flammula, Polygonum Hydropiper, 
Hydrocotyle vulgaris, Lythrum Salicaria, Eriophorum polystachion, etc. 
Loch Wayoch is the most northerly of a group of lochs situated on a 
