| Family | Ranunculaceae |
| Subfamily | Ranunculoideae |
| Tribe | Ranunculeae |
| Scientific name | Ranunculus nipponicus Nakai var. japonicus (Nakai) H. Hara |
| Synonyms | Ranunculus aquatilis L. var. japonicus Nakai |
| Common name | (Japanese common name) mishima baika-mo (ミシマバイカモ, 三島梅花藻 [meaning: Mishima City cherry flower water weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Mishima City) |
| (Other nations) none | |
| Habitat | River |
| Chromosomal number | 2n=14 |
| Description | Plants 1-2m long. Flowers white ca. 1.5-2cm, flowering in June to October. Water plants. Perennial plants. |
| Reference | Notes on Japanese Ranunculus subgenus Batrachium |
| A New Variety of Ranunculus japonicus (Ranunculaceae) and Its Genetic Relationships to the Related Species of Sect. Acris in Japan | |
| Note | Endemic to Japan. Rare species. |
| July 2009 at Mishima City |
July 2009 at Mishima City |
July 2009 at Mishima City |
| July 2009 at Mishima City |