1909-10.] Flora of Scottish Lakes. 177 



abundant in pools ; Coniuni inaculatum, sporadic in sheltered places ; Apium 

 inundatum, very scarce in a few pools ; Heracleum Sphondyliuni, frequent ; 

 Ligusticum scoticuni, very abundant and luxuriant on the cliffs, etc. ; Galium 

 verum, common ; Bcllis perennis, scarce, near the houses ; Senecio Jacobaea, 

 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. conglomeratus, 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 ; LittcjrL'lla laciistris, 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. acutitlorus, dwarf forms about the pools, 

 but not abundant; Heleocharis palustris, dwarf forms a foot or less in 

 height till some of the pools (tig. 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 jjrocess of condensation of such features into a short 

 sunnnary. 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 sliore, depth of water, condition of the bottom, Avhether 

 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 be found there may be roughly indicated, but 

 this apparent simj)licity is frequently moditied by other agencies. 

 VOL. XXX, 12 



