Flora of Scottish Lakes. 
149 
1909-10.] 
palustris, Phalaris arundinacea, Spirsea Ulmaria, and, mixed with them, a 
variety of other plants. On drier ground, Agrostis vulgaris abounds, whilst 
the surface of the adjoining water is covered with Nymphsea lutea (fig 85) 
and Polygonum amphibium. The extensive area of marsh at the north- 
west end has a very luxuriant vegetation, Typha angustifolia, Glyceria 
aquatica, Polygonum amphibium, Equisetum limosum, and Carex rostrata 
being the dominant forms (figs. 83-84). 
Besides the above mentioned, the following plants also occur here : — 
Callitriche autumnalis, Potamogeton filiformis, P. Zizii, P. pusillus, 
Sparganium ramosum, Comarum palustre, Callitriche stagnalis, Eriophorum 
polystachion, Epilobium palustre, E. tetragonum, E. hirsutum, Myosotis 
palustris, Heleocharis acicularis, Juncus bufonius and its var. fasciculatus, 
Carex flava, C. hirta, Scirpus setaceus, Mentha aquatica, M. arvensis, 
Ranunculus Flammula, Lycopus europseus, Lythrum Salicaria, Alisma 
ranunculoides, Hypnum fluitans, H. cuspidatum, and other common marsh 
mosses. 
Black Loch is a small oval pool ^ mile long, situated about a mile 
south-west of the last-mentioned loch, and surrounded by agricultural 
land. Excepting for a portion of the south shore, this loch is so entirely 
surrounded by marsh that the water cannot be approached. Its water is 
not peaty, hut clear and bright, and is entirely encircled by a zone of 
Castalia speciosa and Nymphaea lutea, the latter being next the shore, 
which is the reverse of the order in which they usually grow (figs. 86 and 
87). At the south side no other plants occur between these and the 
gravelly-muddy shore, but elsewhere there is a zone of Equisetum limosum 
between the Nymph sea lutea and the land. Here and there, all around the 
loch, there are associations of Glyceria aquatica on the shore side of the 
Equisetum. Upon both the east and west ends of the strip of gravelly 
shore on the south side, there is a large and pure association of Menyanthes 
trifoliata (fig. 86). In some places, particularly at the west end, where 
there is a large hog, the Equisetum limosum is followed by Carex rostrata, 
and that, in turn, by Juncus effusus on the drier ground. Besides the 
above, the following plants also occur at this loch Littorella lacustris, 
Myriophyllum alterniflorum, Ranunculus aquatilis, Utricularia vulgaris, 
Polygonum amphibium, Comarum palustre, Heleocharis palustris, Carex 
Goodenovii, C. disticha, Iris Pseud-acorus, Alisma Plantago, Caltha palustris, 
Mentha sativa, M. aquatica, Juncus acutiflorus, Ranunculus Flammula, 
Cardamine pratensis, Galium palustre, Hydrocotyle vulgaris, and a few 
common marsh mosses. 
Lochmill Loch is beautifully situated amongst the hills, 2 miles south- 
