| SVCK Number: | 440 |
| Genus: | Groenbladia |
| Species: | undulata |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Desmidiaceae |
| Recommended Medium: | WHM |
| Collector: | Czarnecki, D. |
| Collection Country: | United States of America |
| Collection Locality: | Itasca State Park, Minnesota, USA (Deming pond) (uncert. approx. 200m) |
| Geo Coordinates WGS84: | N 47° 10' 13", W 95° 10' 06" |
| Date of Collection: | 01.01.1988 |
| Determined by: | unknown |
| Strain used in Publication(s): | Hall et al. 2008 Am J Botany 95, 643-654 |
| Red List Information, UK (Brodie et al., 2007): | var. kriegeri and perundulata listed as endangered (Cat.2) |