98 



Proceedings of the Royal Society of Edinburgh. [Sess. 



Peaty Moorland Lochs— cojj^cZ. 



NoN- Peaty Lowland Lochs — contd. 



3. Semi-Aquatic Species that send up from tlie Water a strong Aerial Flowering 

 Stem, hut without special Submersed or Floating Leaves. 



Menyantlies trifoliata, shore-L 

 Heleocharis palustris, shore-H. 

 Carex rostrata, shore-2. 

 Carex filiformis, shore-2. 

 Carex elata, shore- 2. 

 Cladium Mariscus. shore-2. 

 Phragmites communis, shore-3. 

 Equisetum limosum, 1-5. 



Meiwanthes trifoliata, shore-1. 

 Heleocharis palustris, shore-1 1^. 

 Typha angustifolia, shore-l|^. 

 Carex flacca, shore-1^. 

 Carex rostrata, shore-2. 

 Carex acutiformis, shore-2. 

 Carex aquatilis (elatior), shore-2. 

 Phragmites communis, shore-3. 

 Equisetum limosum, 1-5. 



Semi-Aquatic Species that send up from the Water a strong Aerial Flowering 

 Stem, having also Submerged or Floating Leaves that often differ from the 



Aerial ones. 



Glyceria fluitans, |-li. 

 Heleocharis multicaulis, |-1^. 

 Sparganium natans, 1-3. 

 Scirpus lacustris, 2-7. 



Glyceria fluitans, g-l^. 

 Hippuris vulgaris, 1-6. 

 Scirpus lacustris, 2-6. 



5. Aquatic Species that grotv up) into the Water from the bottom more than a foot 

 in height, and usually with at least some Leaves, tohich reach the surface and 

 -float there. 



Species of the following genera of 

 Algae are characteristic of peaty lochs ; 

 they cover rucks, other submersed plants, 

 etc., or, more rarely, float in the water of 

 bays, etc. : — Ulothrix, Mougeotia, Zygo- 

 gonium, Zygnema, and Batrachospermum. 



Polygonum amphibium, shore-i. 

 Apium inundatum, 1-4. 

 Potamogeton rufescens, 2-10. 

 Castalia speciosa, 2-10. 

 Nymphsea lutea, 2-12. 

 ^Nymphsea intermedia, 2-12. 

 Potamogeton polygonifolius, 2-12. 

 Potamogeton natans, 2-20. 

 jS^ymphaea pumila, 7-15. 



The following genera of Algae are 

 characteristic of lowland lochs, and 

 masses of them often float at the surface : 

 — Enteromorpha, Cladophora, Spirogyra, 

 and Qidogonium. 



Polygonum amphibium, shore-4. 

 Apium inundatum, 1-4. 

 Ranunculus peltatus, etc., 1-7. 

 Potamogeton heterophyllus, 1-8. 

 Potamogeton rufescens, 2-10. 

 Castalia sjDeciosa, 2-10. 

 Nymphjea lutea, 2-12. 

 Potamogeton polygonifolius, 2-12. 

 Potamogeton natans, 2-20. 



