| SVCK Number: | 42 |
| Genus: | Cosmarium |
| Species: | pachydermum |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Desmidiaceae |
| Recommended Medium: | WH |
| 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: | 02.04.1963 |
| Determined by: | Mix, M. |
| Red List Information, UK (Brodie et al., 2007): | var. aethiopicum listed as endangered (Cat.2) |
| Non-Identical Isolates: | ACOI: 900+1887+1888 |
| Remark(s): | origin IPM, isolated by Mix, M. |