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| July 2008 at small river |
July 2008 at small river |
July 2008 at small river |
| Family | Hydrocharitaceae |
| Scientific name | Egeria densa Planchon |
| Synonyms | Anacharis densa (Planchon) Victorin; Elodea canadensis Michaux var. gigantea Tricker & W. Miller; Elodea densa (Planchon) Caspary; Elodea gigantea Santos; Philotria densa (Planchon) Small & H. St. John |
| Common name | (Japanese common name) oh-kanada-mo (オオカナダモ, 大カナダ藻 [meaning: large Canadian waterweed]) |
| (English common name) Brazilian elodea, Brazilian waterweed, dense waterweed, waterweed | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) [native] Brazil, Argentina, Uruguay | |
| Habitat | Swamp, river, pond |
| Chromosomal number | 2n=46 |
| Description | Plants ca. 1m long. Leaves 1.5-3cm long, 3-6mm wide. Flowers 3 white petals each 1cm long, flowering in June to October. Water plants. Perennial plants. |
| Reference | Egeria densa Planch. |
| Egeria densa Planch. | |
| Egeria densa Planchon | |
| Egeria densa Planch. | |
| Method and composition for controlling Hydrilla (US Patent 4263036/1981) | |
| Copper and amine based aquatic herbicides (US Patent 4361435/1982) | |
| Mycoherbicidal compositions and methods of preparing and using the same (US Patent 6569807/2003) | |
| Supported fluridone compositions and methods (US Patent 6686317/2004) | |
| Note | Naturalized plants. Invasive plants. |
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| July 2008 at small river |
July 2008 at small river |
July 2008 at small river |
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| October 2008 at Ohsaka City University Botanical Garden |
October 2008 at Ohsaka City University Botanical Garden |
October 2008 at Ohsaka City University Botanical Garden |
