1909-10.] Flora of Scottish Lakes. 149 



palustris, Phalaris arundinacea, Spiraea 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 Nymphaia lutea (fio- 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, Eijuisetum limosum, and Carex rostrata 

 being the dominant forms (figs. 88-84). 



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 setaeeus, Mentha aquatica, M. arvensis, 

 Ranunculus Flammula, Lycopus europasus, 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, but clear and bright, and is entirely encircled by a zone of 

 Castalia speciosa and Nymphfea 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 Nymphaea 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 bog, the Equisetum limosum is followed by Carex rostrata, 

 and that, in turn, by Juncus ettusus on the drier ground. Besides the 

 above, the following plants also occur at this loch : — Littorella lacustris, 

 Myriophjdlum 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. a(|uatica, 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- 



