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| August 2007 at Ushiku Forest Park |
August 2007 at Ushiku Forest Park |
August 2007 at Ushiku Forest Park |
| Family | Hydrocharitaceae |
| Scientific name | Hydrocharis dubia (Blume) Backer |
| Synonyms | Hydrocharis asiatica Miquel; Hydrocharis morsus-ranae L.; Hydrocharis morsus-ranae L. var. asiatica (Miquel) Makino; Pontederia dubia Blume |
| Common name | (Japanese common name) tochi-kagami (トチカガミ, 鼈鏡 [meaning: tochi like mirror (tochi = suppon = Pelodiscus sinensis)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, Philippines, Australia, Myanmar, India | |
| Habitat | Swamp, rice paddy |
| Chromosomal number | 2n=16 |
| Description | Leaves 4-7cm across. Flowers 3 white petals each 1-1.3cm long, flowering in August to October. Water plants. Perennial plants. |
| Reference | Hydrocharis dubia (Blume) Backer |
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| August 2007 at Ushiku Forest Park |
August 2007 at Ushiku Forest Park |
August 2007 at Ushiku Forest Park |
