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| August 2008 at Naruto Marsh |
August 2008 at Naruto Marsh |
August 2008 at Naruto Marsh |
| Family | Hypericaceae (alt. Guttiferae) |
| Scientific name | Triadenum japonicum (Blume) Makino |
| Synonyms | Elodes japonica Blume; Elodes virginica (L.) Nuttall var. asiatica Maximowicz; Elodes virginica (L.) Nuttall var. japonica (Blume) Makino; Hypericum asiaticum (Maximowicz) Nakai; Hypericum fauriei R. Keller; Hypericum similans R. Keller; Hypericum virginicum L. var. asiaticum (Maximowicz) Yatabe; Hypericum virginicum L. var. japonicum (Blume) Matsumura; Triadenum asiaticum (Maximowicz) Komarov; Triadenum crassifolium (Blume) Nakai; Triadenum japonicum (Blume) Makino forma asiaticum (Maximowicz) Y. Kimura |
| Common name | (Japanese common name) mizu-otogiri (ミズオトギリ, 水弟切 [meaning: water otogiri-sou (otogiri = Hypericum weeds; original Japanese meaning is murderer of younger brother))]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China | |
| Habitat | Swamp |
| Chromosomal number | 2n=36 |
| Description | Plants 30-70cm tall. Leaves 3-7cm long, 1-3.5cm wide. Flowers pink ca. 1cm across, calyx ca. 3-4mm long, 9 stamens, flowering in August to September (open at 15:00-17:00). Fruits ca. 1cm long. Perennial plants. |
| Reference | Triadenum japonicum (Blume) Makino |
| Triadenum virginicum (L.) Raf. |
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| August 2008 at Naruto Marsh |
August 2008 at Naruto Marsh |
August 2008 at Naruto Marsh |
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| August 2008 at Naruto Marsh |
August 2008 at Naruto Marsh |
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| August 2008 at Naruto Marsh |
