Flora of Scottish Lakes. 
177 
1909-10.] 
abundant in pools ; Conium maculatum, sporadic in sheltered places ; Apium 
inundatum, very scarce in a few pools ; Heracleum Sphondylium, frequent ; 
Ligusticum scoticum, very abundant and luxuriant on the cliffs, etc. ; Galium 
verum, common ; Beilis perennis, scarce, near the houses ; Senecio Jacobsea, 
scarce ; Cnicus lanceolatus, plentiful ; C. arvensis, very abundant ; Leontodon 
autumnalis, abundant ; Glaux maritima, very abundant, being often one of 
the constituents of the sward ; Rumex Acetosa, very abundant ; R. crispus, 
frequent ; R. conglomerate, scarce ; Armeria maritima, very abundant all 
over the island, and forming a close sward where cropped by rabbits or 
sheep ; Plantago media, not abundant ; P. maritima, abundant ; P. Coronopus, 
very abundant ; Littorella lacustris, abundant in small pools ; Urtica dioica, 
abundant, but generally near the houses ; Atriplex patula, various forms 
abound nearly everywhere, from little fruiting plants 2 inches high in 
exposed places to specimens a foot high in sheltered spots ; sometimes the 
dwarf forms produce a loose sward ; Juncus bufonius and its var. fascicu- 
latus, common about the pools ; J. acutiflorus, dwarf forms about the pools, 
but not abundant; Heleocharis palustris, dwarf forms a foot or less in 
height fill some of the pools (fig. 121) ; H. uniglumis, scarce ; Carex 
Goodenovii, dwarf forms about the pools, but not abundant; C. vulpina, 
abundant about the pools. Agrostis alba, A. vulgaris, Holcus lanatus, and 
Festuca ovina, var. hispidula, are the dominant grasses, and provide the chief 
plant-covering to the soil of the island. Festuca ovina, var. glauca, is 
common about the rocks and drier places. No viviparous forms of F. ovina 
were observed. 
V. — Concluding Remarks. 
In the seven Areas included in this and the former paper, about 175 
lochs have been visited ; these vary in size from what are practically inland 
seas, such as Loch Ness, to mere ponds, like Lochan Diota. These lochs 
have to a considerable extent their individual floristic peculiarities, and this 
fact inhibits the process of condensation of such features into a short 
summary. The lochs may, of course, be grouped in accordance with their 
striking physical characteristics, such as elevation above sea level, exposure 
to wind, nature of shore, depth of water, condition of the bottom, whether 
rocky, stony, sandy, clayey, muddy, etc., kind of water, whether peaty or 
non-peaty, rich or poor in plant food-salts, etc. ; and these characters very 
largely depend upon the physiographical features of the surrounding 
country. When the combination of such factors respecting any loch is 
known, the plants likely to he found there may be roughly indicated, but 
this apparent simplicity is frequently modified by other agencies. 
VOL. xxx. 
12 
