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CCDB → Angiosperms → Potamogetonaceae → Potamogeton → Potamogeton × biwaensis
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Potamogeton × biwaensis | Potamogeton × biwaensis Miki | 52 | IPCN67-71 | Q31 TAKUSAGAWA, H. 1961. Cytological studies in the genus Potamogeton of Japan. Bull. Shimane Agr. Col. 9: 1-3Q. | ||
| ! | Potamogeton × biwaensis Miki | Potamogeton × biwaensis Miki | 52 | Fedorov, 1974 | Harada 1942a, b, 1956 | ||
| ! | Potamogeton × biwaensis Miki. | Potamogeton × biwaensis Miki | 49 | IPCN67-71 | Q29 TAKUSAGAWA, H. 1939. Chromosome numbers in Potamogeton. Volumen Jubilare Pro Prof. Sadao Yoshida: 1066-1067. |