194 THE FRESH- WATER LOCHS OF SCOTLAND 
Peaty Moorland hocHS—contd. \ Non-Peaty Lowland Lochs — no?itd. 
3. Serni- Aquatic Species that send up from the Water a strong Aerial Flowering 
Stem, hid without special Submerged or Floating Leaves 
Menyanthes trifoliata, shore-1. 
Heleocharis paliistris, shore-1^. 
Carex rostrata, shore-2. 
Carex filiformis, shore-2. 
Carex elata, shore-2. 
Cladium Mavisciis, shore-2. 
Phragmites communis, shore-3. 
Equisetiim limosum^ 1-5. 
Menyanthes trifoliata^ shore-L 
Heleocharis paliistris, shore-1 J, 
Typha angusti folia, shore-1^. 
Carex flacca, shore-1^. 
Carex rostrata, shore-2. 
Carex filiformis, shore-2. 
Carex aquatilis (elatior), shore-2, 
Phragmites communis, shore-3. 
Equisetum limosum, 1-5. 
4. Semi- Aquatic Species that send up from the Water a strong Aerial Flowering 
Stetn, having also Submerged or Floating Leaves that often differ from 
the Aerial ones 
Glyceria fluitans, 
Heleocharis multicaulis, 
Sparganium natans, 1-3. 
Scirpus lacustris, 2-7. 
Glyceria fluitans, J-1 J. 
Hippuris vulgaris, 1-6. 
Scirpus lacustris, 2-7. 
5. Aquatic Species that grow up into tl 
foot in height, and usually wii 
surface and float there 
Species of the following genera 
of Algae are characteristic of peaty 
lochs ; they cover rocks, other 
submerged plants, etc., or more 
rarely float in the water of bays, 
etc : — Ulothrix, Mougeotia, Zygo- 
gonium, Zygnema, and Batracho- 
spermum. 
Polygonum amphibium, shore-4. 
Apium inundatum, 1-4. 
Potamogeton rufescens, 2-10. 
Castalia speciosa, 2-10. 
Nymphsea lutea, 2-12. 
Potamogeton polygonifolius, 2- 
12. 
Potamogeton natans^ 2-20. 
Nymphtea pumila, 7-15. 
Water from the Bottom more than a 
at least some Leaves that reach the 
The following genera of Algae 
are characteristic of lowland lochs, 
and masses of them often float at 
the surface : — Enteromorpha, Clado- 
phora, Spirogyra, and QEdogonium. 
Polygonum amphibium, shore-4. 
Apium inundatum, 1-4. 
Ranunculus peltatus, etc., 1-7. 
Potamogeton heterophyllus, 1-10. 
Castalia speciosa, 2-10. 
Nymphaea lutea, 2-12. 
Potamogeton polygonifolius, 2- 
12. 
Potamogeton natans, 2-20. 
