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| September 2007 at lowland swamp |
September 2007 at lowland swamp |
September 2007 at lowland swamp |
| Family | Polygonaceae | |
| Subfamily | Polygonoideae | |
| Scientific name | Persicaria maackiana (Regel) Nakai | |
| Synonyms | Persicaria maackiana (Regel) Nakai forma albiflora H. Hara; Polygonum maackianum Regel; Polygonum thunbergii Siebold & Zuccarini var. maackianum (Regel) Maximowicz ex Franchet & Savatier; Tracaulon maackianum (Regel) Greene; Truellum maackianum (Regel) Soják | |
| Common name | (Japanese common name) sade-kusa (サデクサ, 摩草 [meaning: painful weed]), mizo-sade-kusa (ミゾサデクサ, 溝摩草 [meaning: swamp painful weed]) | |
| (English common name) none | ||
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu | |
| (Other nations) Russia (Far East), Korea, China | ||
| Habitat | Swamp | |
| Chromosomal number | 2n=22 | |
| Description | Plants 40-100cm tall. Leaves 3-8cm long. Flowers red or white (forma albiflora) perianths ca. 3mm long, flowering in August to October. Annual plants. | |
| Reference | Polygonum maackianum Regel |
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| September 2007 at lowland swamp |
September 2007 at lowland swamp |
September 2007 at lowland swamp |
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| September 2007 at lowland swamp |
September 2007 at lowland swamp |
