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| June 2007 at Ushiku Forest Park |
June 2007 at Ushiku Forest Park |
June 2007 at Ushiku Forest Park |
| Family | Potamogetonaceae |
| Scientific name | Potamogeton distinctus A. Bennett |
| Synonyms | Potamogeton alatas Koidzumi; Potamogeton fontigenus Y. H. Guo, X.Z.Sun & H.Q. Wang; Potamogeton franchetii A. Bennett & Baagoe; Potamogeton longipetiolatus A. Camus; Potamogeton perversus A. Bennett |
| Common name | (Japanese common name) hiru-mushiro (ヒルムシロ, 蛭筵 [meaning: leech's mat]) |
| (English common name) roundleaf pondweed | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan | |
| Habitat | Swamp, pond |
| Chromosomal number | 2n=52 |
| Description | Leaves: floating leaves 4.5-10cm long, 2-4cm wide, petioles 5-20cm long. Flowers inflorescences 2.5-5.5cm, flowering in May to October. Fruits ca. 4mm long. Water plants. Perennial plants. |
| Reference | Pyrazole derivative and herbicidal composition (US Patent 5939559/1999) |
| Uracil compounds and use thereof (US Patent 6667413/2003) | |
| Herbicide compositions and weedkilling method using the same (US Patent 7144842/2006) | |
| Pyridone compounds useful for producing pyridine compounds (US Patent 7223862/2007) | |
| Process for producing pyridine compound (US Patent 7157579/2007) |
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| June 2007 at Ushiku Forest Park |
June 2007 at Ushiku Forest Park |
June 2007 at Ushiku Forest Park |
