Die Zieralgen (Desmidiaceae, Zygnemaphyceae) einiger alpiner Bergseen in Osterreich (Niedere Tauern, Steiermark) Desmids from some alpine lakes in Austria (Niedere Tauern, Steiermark)

摘要

In summer 2001 the author made collections from 6 mountain-lakes (Kotalmsee, Goldbachsee, Finsterkarsee, Michelirlingsee, Plannersee and Karlseen) situated in "Niedere Tauern", (Steiermark, Austria). Altogether 162 taxa of desmids were found, 10 of them are new for Austria: Closterium toxon, Euastrum oblongum var. angustum, Actinotaenium wollei, Cosmarium dentiferum, Cosmarium kjellmani, Cosmarium subcostatum var. subdentatum, Cosmarium subcrenatum var. truncatum, Cosmarium subcrenatum var. truncatum f. papillata, Cosmocladium saxonicum, Staurastrum uniseriatum. An especially remarkable and doubtful taxon is Euastrum oblongum var. angustum, hitherto not yet found in Europe, although Prescott described it from North America (Mississipi).