Flora of Scottish Lakes. 
119 
1909-10.] 
deep. The floor of this loch, from a depth of about 8 feet to the deepest 
part, is covered with the dead remains of vegetation, which prevents the 
growth of plants upon that portion of the bottom, as at some other lochs 
previously mentioned. From this zone of dead material to the margin, 
the bottom in many places is carpeted with Lobelia Dortmanna and 
Littorella lacustris. The following plants also occur here abundantly : — 
Nymphsea lutea, Castalia speciosa, Potamogeton lucens, P. natans, P. poly- 
gonifolius, a large Nitella at a depth of from 6 to 8 feet, respecting which 
the Messrs Groves, to whom specimens were submitted, write : “ A large 
barren form of either N. opaca or N. flexilis.” Menyanthes trifoliata, 
Scirpus lacustris, Phragmites communis, Heleocharis palustris, Carex 
rostrata, C. filiformis, Juncus eflusus, J. acutiflorus, J. lamprocarpus, 
Ranunculus Flammula, Mentha aquatica, M. sativa and its var. rubra, 
Spiraea Ulmaria, Comarum palustre, Carum verticillatum, Galium palustre 
(fig. 30), and Eriophorum polystachion. The following are less abundant : — 
Heleocharis acicularis, Myriophyllum alterniflorum, Potamogeton praelongus, 
Juncus fluitans, J. conglomeratus, Iris Pseud-acorus, Deschampsia caespitosa, 
Carex Goodenovii, and Lythrum Salicaria. 
At some parts of this loch the following successive zones of plant 
associations were observed, starting from the shore : — (1) Juncus eflusus, J. 
lamprocarpus, J. acutiflorus, and Ranunculus Flammula, all more or less 
mixed. (2) Carex rostrata or C. filiformis. (3) Heleocharis palustris. (4) 
Phragmites communis. (5) Equisetum limosum. (6) Scirpus lacustris. (7) 
Potamogeton natans, P. polygonifolius, and P. lucens, mixed. (8) Nymphaea 
lutea, Castalia speciosa, and Potamogeton natans, mixed. (9) Carpeting the 
bottom below these zones, wherever there was space, Lobelia Dortmanna 
and Littorella lacustris. 
From a study of the foregoing details it will be observed that this loch 
forms a somewhat transitional stage between a typical peaty highland loch 
and a typical lowland one : figs. 28 and 29 represent some of its features. 
Elates Mill Loch is a small circular pool within a few hundreds of 
yards of the east shore of Woodhall Loch. It is surrounded by a zone of 
Carex rostrata and Equisetum limosum, the former being next the shore. 
There are also quantities of Nymphaea lutea, Castalia speciosa, and some 
other plants common to the district. 
Mossdale Loch is a peaty pool \ mile from New Galloway railway 
station. It contains a few plants common to the neighbourhood, but, like 
the last mentioned, it appears to be of no further botanical interest. On the 
moor east of Mossdale Loch there occurs a particularly fine example of the 
destruction of forest by wind. 
