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| May 2007 at lowland forest |
May 2007 at lowland forest |
| Family | Asteraceae (alt. Compositae) |
| Scientific name | Ixeridium dentatum (Thunberg) Tzvelev |
| Synonyms | Ixeris dentata (Thunberg) Nakai; Ixeris thunbergii A. Gray; Lactuca dentata (Thuberg) Makino; Lactuca thunbergii (A. Gray) Maximovicz; Prenanthes dentata Thunberg; Youngia dentata (Thunberg) de Candolle |
| Common name | (Japanese common name) niga-na (ニガナ, 苦菜 [meaning: bitter greens]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Russia (Kuril islands), Korea, China | |
| Habitat | Field, forest edge |
| Chromosomal number | 2n=21, 24 |
| Description | Plants electing 30cm tall. Flowers involucres 4-5mm, 5-7 (ordinary 5) yellow florets, flowering in April to July. Perennial plants. |
| Reference | Ixeridium dentatum (Thunb.) Tzvelev |
| Pyridine-2-thio, -2-sulfinyl, and -2-sulfonyl sulfonanilide compounds useful as a herbicidal component (US Patent 4218237/1980) | |
| Paints, coatings and polymers containing phytochemical agents and methods for making and using same (US Patent 20050080160) | |
| Remedies (US Patent 20060039998) | |
| Note | common |
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| May 2007 at lowland forest |
May 2007 at lowland forest |
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| May 2007 at mountane field |
May 2007 at mountane field |
May 2007 at mountane field |
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| May 2007 at mountane field |
