| SVCK Number: | 10 |
| Genus: | Cosmarium |
| Species: | quadratum |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Desmidiaceae |
| Recommended Medium: | CHU |
| Collector: | Mix, M. |
| Collection Country: | Germany |
| Collection Locality: | Zeller Loch, Fulda, Germany (uncert. approx. 25m) |
| Geo Coordinates WGS84: | N 50° 30' 47", E 9° 37' 15" |
| Date of Collection: | 10.05.1962 |
| Determined by: | Mix, M. |
| Strain used in Publication(s): | Gontcharov and Melkonian 2011 Protist 162,253-267 |
| Red List Information, UK (Brodie et al., 2007): | endangered (Cat.2) |
| Non-Identical Isolates: | ACOI: 2081+2837+2800 |
| Remark(s): | origin IPM, isolated by Mix, M. |