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Scientific name
Staurastrum quadrangulare Ralfs 1848
Group of organisms
Desmidiales
Red List Category
Threat of Unknown Extent
Responsibility of Germany
General responsibility
Current population status
very rare
Long-term population trend
decline of unknown extent
Short-term population trend
decrease of unknown extent
Previous Red List Category
No evidence, not listed without intentionally excluding the taxa or no confirmed established occurrence (neither under the same nor a different name).
Change of category compared to previous Red List
The change of category is not assessable, for example because the previous Red List does not list the taxon or the taxon has not been assessed in the previous Red List.
Further comments
Historische Fundangaben siehe Engels (2003).
Status
Indigenes or Archaeobiota
Source

Kusber, W.-H. & Gutowski, A. (2018): Rote Liste und Gesamtartenliste der Zieralgen (Desmidiales) Deutschlands. – In: Metzing, D.; Hofbauer, N.; Ludwig, G. & Matzke-Hajek, G. (Red.): Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands. Band 7: Pflanzen. – Münster (Landwirtschaftsverlag). – Naturschutz und Biologische Vielfalt 70 (7): 711-778.