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Scientific name
Placoneis signata (Hust.) Mayama
Synonyms or name indicated in the previous Red List
Navicula exigua var. signata Hust.
Group of organisms
Süßwasser-Kieselalgen
Red List Category
Data Deficient
Responsibility of Germany
General responsibility
Current population status
unknown
Long-term population trend
unknown
Short-term population trend
unknown
Previous Red List Category
Extremely Rare
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.
Status
Indigenes or Archaeobiota
Source

Hofmann, G.; Lange-Bertalot, H.; Werum, M. & Klee, R. (2018): Rote Liste und Gesamtartenliste der limnischen Kieselalgen (Bacillariophyta) 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): 601-708.