 |
 |
 |
|---|---|---|
| October 2007 at rice paddy |
October 2007 at rice paddy |
September 2006 at mountane marsh |
| Family | Polygonaceae |
| Subfamily | Polygonoideae |
| Scientific name | Persicaria sagittata (L.) H. Gross ex Nakai |
| Synonyms | Helxine sagittata (L.) Rafinesque; Persicaria sagittata var. sieboldii (Meisner) Nakai; Persicaria sieboldii (Meisner) K. Ohki; Persicaria sieboldii var. brevifolia Kitagawa; Polygonum belophyllum Litvinov; Polygonum paludosum (Komarov) Komarov; Polygonum sagittatum L.; Polygonum sagittatum var. boreale Meisner; Polygonum sagittatum subsp. sieboldii (Meisner) V. N. Voroschilov; Polygonum sagittatum var. paludosum Komarov; Polygonum sieboldii var. pratense Y. L. Chang & S. X. Li; Polygonum sagittatum var. sibiricum Meisner; Polygonum sagittatum var. sieboldii (Meisner) Maximowicz ex Komarov; Polygonum sieboldii Meisner; Tracaulon sagittatum (L.) Small; Tracaulon sibiricum (Meisner) Greene; Tracaulon sieboldii (Meisner) Greene; Tracaulon sagittatum (L.) Soják; Tracaulon sibiricum (Meisner) Soják. |
| Common name | (Japanese common name) aki-no-unagi-tukami (アキノウナギツカミ, 秋鰻掴 [meaning: Autumn eel catcher]) |
| (English common name) arrow-leaf tearthumb, arrow-vine | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, Korea, China, Mongolia, India, Canada, USA | |
| Habitat | Swamp, riverside |
| Chromosomal number | 2n=34 |
| Description | Plants 60-100cm tall. Leaves 5-10cm long, petioles 7-20mm long. Flowers pink or white perianths ca. 2-2.5mm long, flowering in August to October. Fruits ca. 2mm across. Annual plants. |
| Reference | Persicaria sagittata (L.) H. Gross |
| Polygonum sagittatum Linnaeus |
|
|
|
|---|---|---|
| October 2007 at rice paddy |
October 2007 at rice paddy |
September 2006 at mountane marsh |
 |
 |
|---|---|
| October 2007 at rice paddy |
October 2007 at rice paddy |
 |
 |
 |
|---|---|---|
| October 2007 at rice paddy |
October 2007 at rice paddy |
October 2007 at rice paddy |
