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| August 2007 at Tsukuba Botanical Garden |
August 2007 at Tsukuba Botanical Garden |
August 2007 at Tsukuba Botanical Garden |
| Family | Araceae |
| Subamily | Aroideae |
| Tribe | Arisaemateae |
| Scientific name | Pistia stratiotes L. |
| Synonyms | Apiospermum obcordatum Klotzsch; Limnonesis commutata (Schleiden) Klotzsch; Limnonesis friedrichsthaliana Klotzsch; Pistia aegyptiaca Schleiden; Pistia aethiopica Fenzl ex Klotzsch; Pistia africana C. Presl; Pistia amazonica C. Presl; Pistia brasiliensis Klotzsch; Pistia commutata Schleiden; Pistia crispata Blume; Pistia cumingii Klotzsch; Pistia gardneri Klotzsch; Pistia horkeliana Miquel; Pistia leprieurii Blume; Pistia linguaeformis Blume; Pistia minor Blume; Pistia natalensis Klotzsch; Pistia obcordata Schleiden; Pistia occidentalis Blume; Pistia schleideniana Klotzsch; Pistia spathulata Michaux; Pistia stratiotes L. var. obcordata Engler; Pistia stratiotes L. var. spathulata (Michaux) Engler; Pistia texensis Klotzsch; Pistia turpinii Blume; Pistia weigeltiana C. Presl; Zala asiatica Loureiro |
| Common name | (Japanese common name) botan-ukikusa (ボタンウキクサ, 牡丹浮草 [meaning: botan floating weed (botan = Paeonia suffruticosa)]) |
| (English common name) Nile-cabbage, tropical duckweed, water cabbage, water lettuce | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) [native] South America? (worldwide naturalized) | |
| Habitat | Pond, swamp |
| Chromosomal number | 2n=28 |
| Description | Leaves 30cm long. Flowers spathes 0.5-1.2cm tall. Water plants. Evergreen. Perennial plants. |
| Reference | Pistia stratiotes L. |
| Pistia stratiotes L. | |
| Pistia stratiotes Linnaeus | |
| Pyrazolyltriazole herbicides (US Patent 4115097/1978) | |
| Pyrazolyltriazole herbicides (US Patent 4169838/1979) | |
| Controlled release of herbicide compounds utilizing a thermoplastic matrix (US Patent 4405360/1983) | |
| Preparations that contain an extract of the plant pistia stratiotes (US Patent 20030165582) | |
| Note | Naturalized plants (first reported in 1887). |
| Invasive plants. Selling, exchange, transport, cultivation, or importation of Pistia stratiotes without any permission by the Japanese government is strictly prohibited in Japan under the Law on Prevention against Environmantal Damages by Specific Exotic Animals and Plants (Law no.78-2004, amendment in 2005). |
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| August 2007 at Tsukuba Botanical Garden |
August 2007 at Tsukuba Botanical Garden |
August 2007 at Tsukuba Botanical Garden |
