| Nymphaea tetragona Georgi | |
| Publ. & Syn. | Georgi, Bemerk. Reise 1: 220 (1775). Described from near lake Baikal (Siberia). - Nymphaea alba subsp. tetragona (Georgi) Korsh., Fl. Vost. Evr. Ross. 1: 133 (1892). |
| Notes | Nymphaea tetragona reaches the Borderline Arctic in the Polar Ural and approaches the Arctic in Alaska. |
| Chromosomes | 112 (8x). - Europe (N), Far East (S). - At least three reports. |
| Geography | European (E) - Asian amphi-Beringian: (RUS). |
| Distribution | N = F E = b UN = b [ key ] |
| Parent taxon | Nymphaea L. |
| PAF ID | 150201 |