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| October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
| Family | Asteraceae (alt. Compositae) |
| Scientific name | Bidens bipinnata L. |
| Synonyms | Bidens bipinnata L. var. biternatoides Sherff; Bidens bipinnata L. var. minor Memminger; Bidens cynapiifolia Kunth; Bidens pilosa L. var. bipinnata (L.) Hooker f. |
| Common name | (Japanese common name) koba-no-sendan-gusa [small leaved sendan weed [sendan = Melia azedarach]] |
| (English common name) Spanish blackjack, Spanish needles | |
| Distribution | (Japan) Honshu |
| (Other nations) China, Taiwan, Malaysia, Australia, India, Europe, USA | |
| Chromosomal number | 2n=24, 72 |
| Description | Plants 25-85cm. Flowers yellow, flowering in August to October. Annual plants. |
| Reference | Bidens bipinnata L. |
| Bidens bipinnata L. | |
| Bidens bipinnata Linnaeus | |
| Bidens bipinnata L. | |
| Heteroaryl azole herbicides (US Patent 6172005/2001) | |
| Substituted pyrimidine and pyridine herbicides (US Patent 6525001/2003) | |
| Herbicidal oxadiazolidines (US Patent 6737383/2004) | |
| Note | Bidens bipinnata L. is deemed to be a kind of naturalaized plant which was introduced from Southern Asia in ancient era. |
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| October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
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| October 2007 at Ushiku Forest Park |
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| October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
October 2007 at Ushiku Forest Park |
