1909-10.] Flora of Scottisli Lakes. 75 



Hypericum elodes, L. IV., [V. — J. M'A.], VI. Sometimes very abund- 

 ant, but alwaj^s in peaty water (fig. 26). 



ROSACEA. 



Spiraea Ulmaria, L. " I., II., III.," IV., V., VI., VII. Widely distributed 

 and frequently very abundant, but chiefly about lowland lakes 

 (%.98). 



Comarum palustre, L. { = Potentilla j)alustris, Scop.). "I., II., III.," 

 IV., v., VI., VII, Remarks the same as to the last-mentioned plant. 



LYTHRACE.^. 



Peplis Portula, L. "I.," IV., V., VI., VII. Aquatic and terrestrial 

 forms are common about the shores of lochs, but chiefly lowland. 

 The ordinary fragile form is mostly met with, but at Loch Bar- 

 happle a very large and stout terrestrial form grows abundantly in 

 large, flat, spreading patches over the muddy shore ; many of these 

 patches, consisting of but one plant, were more than a foot in 

 diameter. Opposed to the latter, at the south end of Loch Doon, 

 an entirely submersed form was very abundant, growing to a depth 

 of 3 feet. The leaves of these were much larger, thin, and semi- 

 pellucid, stems weak and considerably elongated. 



Lythrum Salicaria, L. "II.," IV., V., VI., VII. Frequently very 

 abundant on the shores of lochs, chiefly lowland, but rare in Area 

 VII. (fig. 74). 



ONAGRACE^. 



Epilobium angustifolium, L. " I," VI. Very scarce at the lochs. 

 Epilobium palustre, L. " II.," VI., VII. Usually with other herbage in 



marshy places on the shores of lochs. 

 Epilobium tetragonum, L. IV., VII. Remarks same as to the last 



mentioned, but this is a less frequent species, and is generally scarce. 

 Epilobium hirsutum, L. " I," VII. Seldom abundant, but occasionally 



dominant over a small area of marshy shore. Of common occurrence 



in ditches and by rivers. 



HALORAGACEiE. 



Hippuris vulgaris, L. " I., II., III.," [V., VL— J. M'A.], VII. Occasion- 

 ally very abundant, but alwa3^s in lowland lochs (fig. 90). 



Myriophyllum alterniflorum, DC. "I., III.," IV., V., VL, VIL 

 Generally very abundant, but it usually seems to require water that 



