FLORA OF SCOTTISH LAKES 
191 
Enteromorpha intestinalis, Linh^ III., VII. Particularly plentiful 
in Kilconquhar Loch and Loch Fitty. 
Ulothrix aequalis, Xiltz., and its var. cataeniformis, Rahenh. In all 
the Areas, but particularly in IV. 
Conferva fontinalis. Berk. [ = Rhizoclonium hieroglyphicum, Kutz.\ 
Very general in lochs that receive drainage from villages. 
Cladophora fracta, Kiitz.^ II., VII. Occasionally very abundant. 
Cladophora crispata, Roth., VII. Occasionally abundant. 
Cladophora flavescens, Ag., V., VII. Sometimes very abundant in 
lochs that receive the drainage of villages. 
Cladophora canalicularis. Roth., VI., VII. Abundant ; less so in 
" the other Areas. It covers stones and rocks about the shores 
of lochs that receive the drainage of villages and farms. It is 
often covered with a prodigious quantity of diatoms. 
Cladophora glomerata, Kiitz. Very abundant in some lochs of 
Areas IV. and VI., covering stones and rocks from the margin 
to 7 feet deep. 
Mougeotia sp. Sometimes very abundant in I. and IV. 
Zygogonium ericetorum, De Bary, I., IV. Often very abundant 
in water near the shores of the hill lochs. 
Zygnema Vaucherii, Ag., I., II., IV., VI. Frequent. 
Spirogyra crassa, Kiitz., III. Only noticed in abundance here. 
Porphyridium cruentum, Nag., VI. Wet mud at Barhapple Loch, 
exposed through drought, was in places coloured red by this 
organism. 
Glceotrichia Pisum, Thur., VI. Occurs in such extreme abundance 
as a plankton organism in Soulseat Loch that the water, in 
some of the little creeks, is of the consistency of liquid mud. 
Anabaena circinalis, Rabenh., VII. The water of Kinghorn Loch, in 
places, had the appearance of pale green paint, due to the vast 
quantity of this organism. 
Melosira granulata, Rolfs., VI. Occurs, as a plankton organism, in 
White Loch, Castle Kennedy, in such abundance that the 
discoloration of the water (p. 243) is, in part, due to it. 
Dickieia and similar gelatinous Diatomacese, I., IV. Sometimes 
abundant at the margins of the hill lochs. Other diatoms, of 
course, abound everywhere. 
I have frequently found submersed plants of the higher orders 
injured by the luxuriant growth of filamentous Algae. In Loch 
Skerrow and Loch Grennoch, for example, quantities of Scapania 
undulata were in a defunct condition through being overgrown with 
Ulothrix aequalis, Batrachospermum vagum, Binuclearia tatrana, etc. 
In Area I. many moor and hill plants, that are either scarce or 
entirely absent in the south, grow in great profusion. The following 
