1904 - 5 .] 
Flora of Scottish Lakes. 
1007 
Eanunculus Flammula, Caltha palustris, Cardamine pratensis, 
Stellaria uliginosa, Spirtea Ulmaria, Comarum palustre, Epilobium 
hirsutum, Myriophyllum alterniflorum, Callitriche hamulata, 
Hydrocotyle vulgaris, Galium palustre, Senecio aquaticus, Lobelia 
Dortmanna, Lysimachia nemorum, Menyanthes trifoliata, Myosotis 
palustris, Pedicularis palustris, Mentha arvensis, var. agrestis, 
Mentha sativa, var. rubra, Polygonum amphibium, Juncus bufonius, 
J. fluitans, Sparganium natans, S. minimum, P. natans, P. app. 
polygonifolius, Heleocharis palustris, Scirpus lacustris, Des- 
champsia csespitosa, Glyceria fluitans, Isoetes lacustris, Nitella 
opaca, Chara fragilis, var. delicatula, Fontinalis antipyretica, 
Batrachospermum moniliforme, Conferva fontinalis. 
Near this loch I saw an enormous “witches’ broom” on Pinus 
sylvestris (fig. 68). Such a large, extremely compact and well- 
grown broom on Pinus sylvestris is not often met with. It is now 
in the museum of the Eoyal Botanic Garden in Edinburgh. 
Ascending the hills north of Glen Urquhart, we find a number of 
mountain lochs, differing somewhat in character from any hitherto 
seen. Here, with some exceptions, we have a great abundance of 
Castalia speciosa in its normal form, and often a luxuriant swamp 
vegetation of Scirpus lacustris, etc. Vegetation, although restricted 
in species, is more luxuriant than usual in hill lochs. This is no 
doubt due to two causes : — 1st. Most of these lochs are sheltered 
from wind by adjacent hills. 2nd. Seams of lime occur in these 
mountains, and undoubtedly its influence is felt in the lakes. The 
waters are usually but slightly peaty, moorland peat not being 
abundant above the level of the lochs ; so that we have in the 
general appearance of the flora of these lochs characters usually 
associated with lowland lakes. Fig. 69 is an illustration of a loch 
with an abundant flora upon its eastern shore ; this anomalous con- 
dition is due to the shelter afforded by hills on the west, south, and 
north sides. In fig. 70 a huge crescent of Castalia speciosa is seen 
to grow around the whole bay ; behind which are associations of 
Equisetum limosum and Carex rostrata. A similar feature is 
shown in fig. 71, with the addition here of Phragmites communis. 
The following plants occur here beyond those above mentioned — 
Eanunculus Flammula, Caltha palustris, Cardamine pratensis, 
Comarum palustre, Myriophyllum alterniflorum, Callitriche 
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