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| September 2006 at lawland swamp |
September 2006 at lawland swamp |
| Family | Lythraceae |
| Scientific name | Rotala ramosior (L.) Koehne |
| Synonyms | Ammannia catholica Chamisso & Schlechtendal; Ammannia catholica Chamisso & Schlechtendal var. brasiliensis Chamisso & Schlechtendal; Ammannia catholica Chamisso & Schlechtendal var. philippinensis Chamisso & Schlechtendal; Ammannia coccinea Rottbøll subsp. purpurea (Koehne) Koehne; Ammannia dentifera A.Gray; Ammannia humilis Michaux; Ammannia linearifolia Rafinesque; Ammannia monoflora Blanco; Ammannia multicaulis Rafinesque; Ammannia occidentalis (Sprengel) de Candolle; Ammannia occidentalis (Sprengel) de Candolle var. pygmaea Chapman; Ammannia purpurea Lamarck; Ammannia ramosa Hill; Ammannia ramosior L.; Ammannia sanguinolenta Swartz; Boykinia humilis (Michaux) Rafinesque; Peplis occidentalis Sprengel; Rotala catholica (Chamisso & Schlechtendal) Leeuwen; Rotala dentifera (A. Gray) Koehne; Rotala ramosior (L.) Koehne var. interior Fernald & Griscom; Rotala ramosior (L.) Koehne var. typica Fernald & Griscom |
| Common name | (Japanese common name) America kikashi-gusa (アメリカキカシグサ, 亜米利加キカシ草 [meaning: America kikashi weed (meaning of kikashi is unknown)]) |
| (English common name) lowland rotala | |
| Habitat | Swamp |
| Distribution | (Japan) Honshu (mainly Kanto region, Central region) |
| (Other nations) [native] USA | |
| Chromosomal number | 2n=16, 32 |
| Description | Plants creeping 10-40cm long. Leaves 1-3cm long. Flowers white or pink petals (each 4–6 or 0), flowering in September. Annual plants. |
| Reference | Rotala ramosior (L.) Koehne |
| Rotala ramosior (L.) Koehne | |
| Rotala ramosior (Linnaeus) Koehne | |
| Rotala ramosior (L.) Koehne | |
| Note | Naturalized plants (first discovered at Yokohama in 1993). |
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| September 2006 at lawland swamp |
September 2006 at lawland swamp |
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| September 2006 at lawland swamp |
September 2006 at lawland swamp |
September 2006 at lawland swamp |
