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| October 2007 at rice paddy |
October 2007 at rice paddy |
October 2007 at rice paddy |
| Family | Polygonaceae |
| Subfamily | Polygonoideae |
| Scientific name | Persicaria hydropiper (L.) Spach |
| Synonyms | Persicaria hydropiper (L.) Spach var. scabrida Hara; Persicaria hydropiper (L.) Opiz; Polygonum hydropiper L.; Polygonum hydropiper L. var. fastigiatum Makino; Polygonum hydropiper L. var. maximowiezii (Regel) Makino; Polygonum hydropiper L. var. projectum Stanford; Polygonum maximoviczii Regel |
| Common name | (Japanese common name) yanagi-tade (ヤナギタデ, 柳蓼 [meaning: willow tade (tade = Polygonaceae plants)]) |
| (English common name) marshpepper knotweed, marshpepper smartweed, redleaf, smartweed, water-pepper | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Russia, Korea, China, Taiwan, Philippines, Malaysia, Indonesia, Australia, Myanmar, Bangladesh, Nepal, Bhutan, India, Sri Lanka, Pakistan, Afghanistan, Caucasus, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, Iran, Lebanon, Turkey, Europe, Algeria, Morocco, Canada, USA | |
| Habitat | Swamp, rice paddy |
| Chromosomal number | 2n=20 |
| Description | Plants 30-80cm tall. Leaves 4-10cm long. Flowers inflorescences 3-5cm long, pink or white perianths ca. 3-3.5mm long, flowering in July to November. Annual plants. |
| Reference | Persicaria hydropiper (L.) Spach |
| Persicaria hydropiper (Linnaeus) Spach | |
| 2,3-Dicyanopyrazines (US Patent 4259489/1981) | |
| 2,3-Dicyano 6 phenyl pyrazine herbicides (US Patent 4460403/1984) | |
| Substituted phenyl (thiono)carbamates, herbicidal compositions containing the same as active ingredient and method of controlling weeds (US Patent 4491465/1985) | |
| Herbicidal amide compounds and their uses (US Patent 4657581/1987) | |
| Remedy (US Patent 20060216362) |
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| October 2007 at rice paddy |
October 2007 at rice paddy |
October 2007 at rice paddy |
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| October 2007 at rice paddy |
October 2007 at rice paddy |
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| October 2007 at rice paddy |
October 2007 at rice paddy |
