| Determined as: | Potamogetonaceae Potamogeton perfoliatus L. |
| Collected by: | Hilbig, W.; Schamsran, Z., 08.06.1974 |
| Confirmed by: | Uhlig, J., Jul 75 |
| Flowering status: | vegetative |
| Comments for presentation : | Uhlig: "densifolius-Form", Vgl. hierzu Bemerkungen zu Nr. 41648 |
| Herbarium: | HAL Acc. No.: 41651 |
| Country: | Mongolia |
| Province: | Khovd |
| District: | Erdenebüren |
| Locality: | Westliche Mongolei. Altwasser N Irden Buren Richtung Chovd Gol |
| Coordinates: | geogr. Coord. 91.445 (lon) 48.522 (lat) |
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| Prec: | 10 km |
| Habitat: | Altwasser |