Flora of Scottish Lakes. 
75 
1909-10.] 
Hypericum elodes, L. IV, [V. — J. M‘A.], VI. Sometimes very abund- 
ant, but always in peaty water (fig. 26). 
ROSACE M. 
Spiraea Ulmaria, L. “ I, II., III.,” IV, V, VI, VII. Widely distributed 
and frequently very abundant, but chiefly about lowland lakes 
(fig. 98). 
Comarum palustre, L. ( = Potentilla palustris, Scop.). “I, II, III,” 
IV, V, VI, VII. Remarks the same as to the last-mentioned plant. 
LYTHRACEAL 
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). 
ONAGRACEAE.* 
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. 
HALORAGACEAE. 
Hippuris vulgaris, L. “ I, II, III,” [V, VI. — J. M‘A.], VII. Occasion- 
ally very abundant, but always in lowland lochs (fig. 90). 
Myriophyllum alterniflorum, DC. “ I, III,” IV, V, VI, VII. 
Generally very abundant, but it usually seems to require water that 
