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| September 2006 at rice paddy |
September 2006 at rice paddy |
September 2006 at rice paddy |
| Family | Onagraceae |
| Subfamily | Ludwigioideae |
| Scientific name | Ludwigia decurrens Walter |
| Synonyms | Diplandra compressa Rafinesque; Diplandra decurrens (Walter) Rafinesque; Diplandra heterophyla Rafinesque; Diplandra montana Rafinesque; Diplandra ovata Rafinesque; Diplandra pumila Rafinesque; Isnardia alternifolia (L.) de Candolle var. uniflora (Rafinesque) de Candolle; Jussiaea alata C. Presl; Jussiaea alata G. Don; Jussiaea bertonii H. Leveille; Jussiaea decurrens (Walter) de Candolle; Jussiaea palustris G. Meyer; Jussiaea pterophora Miquel; Jussiaea tenuifolia Nuttall; Ludwigia jussiaeoides Michaux; Ludwigia uniflora Rafinesque |
| Common name | (Japanese common name) hire-ta-gobo (ヒレタゴボウ, 鰭田牛蒡 [meaning: winged rice paddy gobo (gobo = strong roots weed)]) |
| (English common name) winged water-primrose | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku |
| (Other nations) USA, Mexico | |
| Tribe | Swamp, rice paddy |
| Chromosomal number | n=8, 2n=16 |
| Description | Plants electing ca. 1m tall. Leaves 5-12cm long, 1.5-3cm wide. Flowers yellow ca. 2.5cm, flowering in August to October. Annual plants. |
| Reference | Ludwigia decurrens Walter |
| Ludwigia decurrens Walter | |
| Note | Naturalized plants (first discovered at Matsuyama City in 1955). |
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| September 2006 at rice paddy |
September 2006 at rice paddy |
September 2006 at rice paddy |
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| September 2006 at rice paddy |
September 2006 at rice paddy |
September 2006 at rice paddy |
