| SVCK Number: | 465 |
| Genus: | Cosmarium |
| Species: | regnesi |
| Variety: | polonicum |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Desmidiaceae |
| Recommended Medium: | EST0.5 |
| Collector: | Hiroki, M. |
| Collection Country: | Japan |
| Collection Locality: | Hokkaido, Japan (small lake, Hokkaido east) (uncert. approx. 110000m) |
| Geo Coordinates WGS84: | N 43° 31' 29", E 143° 53' 50" |
| Date of Collection: | 01.01.1998 |
| Determined by: | Gontcharov, A.A. |
| Strain used in Publication(s): | Gontcharov and Melkonian 2011 Protist 162,253-267; Stamenkovic and Hanelt 2011 Aquat Ecol 45, 455-47, Stamenkovic and Hanelt 2013 Euro. J. Phycol.,_in press. |
| Red List Information, UK (Brodie et al., 2007): | var. minimum and pseudoregnellii listed as vulnerable (Cat.3) |
| Non-Identical Isolates: | ACOI: 2790+3246 |