Flora of Scottish Lakes. 
81 
1909—1 0.] 
occur naturally in wet places about the shores of lakes. Many other 
species and genera occur, especially about the lowland lakes, but 
mostly on drier ground. These and the damp-loving species of 
Salix, Populus, etc., that are found, generally bear evidence of 
having been planted for ornamental or other purposes. 
HYDROCHARIDACEiE. 
Anacharis Alsinastrum, Bab. ( = Elodea canadensis, Michx.). VII. 
Particularly abundant in Loch Leven, but less. so than formerly on 
account of the raids made against it by the angling authorities 
[VI. Monreith Loch.— J. M‘A.]. 
IRIDACEiE. 
Iris Pseud-acorus, L. “ I., II., III.,” V., VI., VII. Frequent, often 
overgrowing a considerable patch of littoral marsh, but rarely seen 
at the hill lochs (figs. 9i and 102). 
ALISMACEiE. 
Alisma Plantago, L. ( = A . Plantago-aquatica, L.). “I., II.,” V., VI., 
VII. Abundant in many places. A curious submersed form occurs at 
Loch Geliy (p. 161). 
Alisma ranunculoides, L. “ 111.,” IV., V., VI., VII. Widely distri- 
buted, but seldom abundant. Dwarf forms about 1^ inches high 
occur on the exposed sandy shores of Loch Leven and other places. 
An entirely submersed form about 3 inches high, with quite 
subulate leaves, is occasionally found, and is abundant at Loch 
Corsock. There it flowers under water to a depth of 3 feet; 
without the flower-stalk these submersed forms look extremely like 
Isoetes lacustris. 
JUNCAGINACEiE. 
Triglochin palustre, L. “ I., II.,” IV., VI. Scarce, and sporadically 
scattered about the shores of lochs. 
MELANTHACEiE. 
Narthecium ossifragum, Huds. “ I.,” IV., V., VI. On peaty shores, but 
seldom abundant. 
JUNCACE.E. 
Juncus effusus, L. “ I., II., III.” IV., V, VI., VII. Abundant every- 
where, and often covering large areas of ground (figs. 66, 75, 79, etc.). 
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