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| April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
| Family | Polygonaceae |
| Subfamily | Polygonoideae |
| Scientific name | Bistorta tenuicaulis (Bisset et S. Moore) Nakai |
| Synonyms | Polygonum tenuicaulis (Bisset & S.Moore) Nakai |
| Common name | (Japanese common name) haru-tora-no-o (ハルトラノオ, 春虎尾 [meaning: Spring tiger tail]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) none | |
| Habitat | Mountane forest |
| Chromosomal number | unknown |
| Description | Flower electing 15-25cm tall. Leaves 2-8cm long. Flowers inflorescence 1.5-3.5cm long, white perianths ca. 3mm long, flowering in April to May. Perennial plants. |
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| April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
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| April 2006 at Mt. Tsukuba |
April 2006 at Mt. Tsukuba |
April 2006 at Mt. Tsukuba |
