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| August 2006 at high mountain |
August 2006 at high mountain |
August 2006 at high mountain |
| Family | Polygonaceae |
| Subfamily | Polygonoideae |
| Scientific name | Fallopia japonica (Houttuyn) Ronse Decraene |
| Synonyms | Fallopia japonica var. compacta (J. D. Hooker) J. Bailey; Pleuropterus cuspidatus H. Gross; Polygonum cuspidatum Siebold & Zuccarini; Polygonum reynoutria Makino; Reynoutria henryi Nakai; Reynoutria japonica Houttuyn; Tiniaria japonica (Houttuyn) Hedberg |
| Common name | (Japanese common name) ita-dori (イタドリ, 虎杖 or 痛取 [meaning: pain-reliever]) |
| (English common name) Japanese knotweed, Mexican-bamboo | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, Korea, China, Taiwan | |
| Habitat | Field, riverside, roadside, forest edge |
| Chromosomal number | 2n=88 (8x) |
| Description | Plants 150cm tall. Leaves 6-15cm long. Flowers white perianths ca. 1.5mm long, flowering in July to October. Perennial plants. |
| Reference | Fallopia japonica (Houtt.) Ronse Decr. |
| Reynoutria japonica Houttuyn | |
| Soil treatment (WIPO Patent WO/2004/040958) |
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| August 2006 at high mountain |
August 2006 at high mountain |
August 2006 at high mountain |
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| October 2006 at Tsukuba Botanical Garden |
October 2006 at Tsukuba Botanical Garden |
October 2006 at Tsukuba Botanical Garden |
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| October 2006 at Tsukuba Botanical Garden |
