| Family | Asteraceae (alt. Compositae) |
| Scientific name | Eupatorium chinense L. subsp. sachalinense (F. Schmidt) Kitamura ex Murata |
| Synonyms | Eupatorium chinense L. subsp. sachalinense (F. Schmidt) Kitamura ex Murata var. hakonense (Nakai) Kitamura ex Murata; Eupatorium chinense L. var. sachalinense (F. Schmidt) Kitamura ex Ohwi; Eupatorium glehnii F. Schmidt ex Trautvetter |
| Common name | (Japanese common name) yotsu-ba-hiyodori-bana [four leaves hiyodori flowers (hiyodori = bulbul birds)] |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku |
| (Other nations) none | |
| Chromosomal number | 2n=30 |
| Description | Plants electing ca. 100cm. Leaves quaternate, each 10-15cm length, 3-4cm width. Flowers involucres 5mm, flowering in August to September. Perennial plants. |
| Reference | Eupatorium chinense L. var. sachalinense (F. Schmidt) Kitam. |
| August 2006 at high marsh |
August 2006 at high marsh |