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| September 2007 at Mt. Tsukuba |
September 2007 at Mt. Tsukuba |
August 2007 at Koishikawa Botanical Garden |
| Family | Asteraceae (alt. Compositae) |
| Scientific name | Rhynchospermum verticillatum Reinwardt ex Blume |
| Synonyms | Leptocoma racemosa Lessing; Rhynchospermum formosanum Yamamoto; Rhynchospermum verticillatum Reinwardt ex Blume var. subsessilis Oliver ex Miquel; Zollingeria scandens Schultz-Bipontinus |
| Common name | (Japanese common name) shubun-so [autumnal equinox weed] |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, Vietnam, Thailand, Malaysia, Indonesia, Myanmar, Nepal, India | |
| Chromosomal number | 2n=18 |
| Description | Plants 50-100cm. Leaves 7-15cm length, 17-32mm width. Flowers flowering in August to October. Perennial plants. |
| Reference | Rhynchospermum verticillatum Reinw. |
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| September 2007 at Mt. Tsukuba |
September 2007 at Mt. Tsukuba |
August 2007 at Koishikawa Botanical Garden |
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| August 2007 at Koishikawa Botanical Garden |
August 2007 at Koishikawa Botanical Garden |
