148 KAARE MÜNSTER STRØM. 



III Account of the Associations. 



Only those species which played an importaiit rôle in com- 

 posing the alga-community are noticed. 



1. Elevation 5000 feet. At the „Gausta-knæ". Ice- 

 water. July 11. 1919. 3 species. 



Synechococcus æruginosus, Mesotænium macrococcum. 



2. Elevation 4100 feet. „Flisetjern^ July 2. 1919. 

 29 species. 



Chroococcus turgidus, Aphanocapsa Grevillei, Merismopedia 

 glauca, tenuissima, Cylindrocystis Brehissonii, Penium Gucur- 

 bitinum, Telmemorus granulatus, lævis, Euastrum verrucosum, 

 Cosmarium Phaseolus, Cucurbita, subtumidum, Ulothrix variabilis. 



3. Elevation 3400 feet. July 15. 1919. 3 species. 

 Cylindrocystis Brehissonii, Staurastrum alternans var. 



pulchrum. 



4. Elevation 3300 feet. At „Aarohøvde". June 24. 

 1919. 54 species. 



Penium Libellula, minutum, truncatum, Cucurbitinum, Tet- 

 memorus granulatus, Euastrum binale, elegans, sinuosum var. 

 reductum, pectinatum var. inevolutum, inerme, Cosmarium sub- 

 tumidum, Phaseolus, pseudopyramidatum, subcrenatum, Staur- 

 astrum punctulatum, vestitum, Sphaerozosma excavatum, Eremo- 

 sphæra viridis. 



5. Elevation 3200 feet. July 5. 1919. 41 species. 

 Chroococcus turgidus, Stigonema panniforme, Glenodinium 



uliginosum, Mougeotia sp., Netrium Digitus, Penium Cucur- 

 bitinum, Euastrum binale, bidentatum, sinuosum var. reductum, 

 ansatum, pectinatum var. inevolutum, Cosmarium subtumidum, 

 pseudopyramidatum, Cucurbita, Staurastrum punctulatum. 



6. Elevation 3200 feet. July 5. 1919. 25 species. 

 Fragilaria sp., Netrium Digitus, Tetmemorus granulatus, 



Cosmarium Quadrum, subcrenatum, coelatum, Staurastrum punc- 

 tulatum & var. pygmæum, pilosum. 



