_ 44 — 



the lake. Soon after the Phanerogams appear. The succession of the 

 single formations is seen from the following survey: 



1. Garex limosa-Scheuchzeria-Formation (Tab. 3, Nr. I. 1 ) Tab. 5, Nr. 1. Tab. 1, 

 Nr. 1). 



2. Rhynchospora alba-Formation (Tab. 1, Nr. 2. Tab. 3, Nr. 2). 



3. Eriophorum polystachyum-Oxycoccus-Formation (Tab. 1, Nr. 3. Tab. 3, Nr. 3. 

 Tab. 5, Nr. 3). 



4. Eriophorum.vaginatum-Formation (Tab. 1, Nr. 4. Tab. 3, Nr. 4. Tab. 7, Nr. 4). 



5. Scirpus caespitosus-Formation (Tab. 1, Nr. 5). 



6. Calluna-Empetrum-Formation (Tab. 1, Nr. 6. Tab. 2, Nr. 5, 6 and 7. Tab. 3, 

 Nr. 6. Tab. 4, Nr. 1 og 2. Tab. 5, Nr. 5). 



7. Betula-Vaccinium uliginosum-Formation (Tab. 1, Nr. 7. Tab. 2, Nr. 8 and 9. 

 Tab. 4, Nr. 3. Tab. 5, Nr. 6). 



8. Betula-Molinia-Formation (Deschampsia flexuosa, Vaccinium myrtillus) (Tab. 4, 

 Nr. 4 and 5. Tab. 5, Nr. 7. Tab. 1, Nr. 8). 



When the Sphagnum-moor arises on the top of a low-moor, the first 

 species of Sphagnum which appear in the low-moor always are the more 

 lime-enduring species, as a rule the species : Sphagnum teres, S. squarrosus, 

 S. contortum and S. subsecundum. These Sphagnum-species are able to 

 grow side by side with pronounced low-moor-plants. Thus Sphagnum 

 contortum in Lyngby-moor grows side by side by Ranunculus lingua, 

 Cardamine pratensis and Caltha palustris. In these intermediate stages 

 Carex lasiocarpa appears to be characteristic. Not until later do the real 

 high-moor-Sphagna appear. These supersede the lime-enduring species; 

 the moor soon gets the same character as the real high-moor, and here- 

 after its development will be quite the same as that in high-moors. 



Tab. 9 column 1 — 5 show the development of the low-moor into 

 Sphagnum-moor. 



Tab. 1 1 shows the vegetation in two small moors which are in transition 

 from low-moor to Sphagnum-moor. 



*) Each column represents a formation. The numbers indicate the degree of 

 frequency of every species in per cents, and have been produced by coun- 

 ting in how many per cents of the samples (each x /io □ m) every single species 

 occurs. (Raunkiær's statistical methods. See William G. Smith : Raunkiær's 

 „life-forms" and statistical methods. The Journal of Ecology, Vol. 1, No. 1. 

 March 1913. Also: C. Raunkiær: Formationsundersøgelse og Formations- 

 statistik. Bot. Tidsskr. Bd. 30, 1909.) 



