| Determined as: | Polygonaceae Persicaria hydropiper (L.) Spach |
| Record formerly determined as: | Polygonum hydropiper |
| Collected by: | Hilbig, W., 30.08.1981 |
| Flowering status: | flowering |
| Herbarium: | HAL Acc. No.: 56100 |
| Country: | Mongolia |
| Province: | Ulaanbaatar (Autonomous municipality) |
| Locality: | Zentrale Mongolei, Ulan-Bator. Tuul gol-Aue östl. der Stadt an Straßenbrücke Richtung Nalajch |
| Coordinates: | geogr. Coord. 107.098 (lon) 47.904 (lat) |
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| Prec: | 15 km |
| Habitat: | Feuchtstelle mit Bidentetea-Arten |