| Country or region name |
Japan |
| Organism group |
plant |
| Order name |
Asterales |
| Family name |
Asteraceae |
| Species name |
Erigeron annuus |
| English common name |
annual fleabane, eastern daisy fleabane |
| Substantially same species (synonym) |
Erigeron annuus var. discoideus (Victorin & Rouss.) Cronquist, Stenactis annua (L.) Nees |
| Year of invasion or detection |
|
| Native region |
North America |
| Situation of establishment |
Category 1: Settled before 1950 |
| Taxonomic description |
| |
| Expansion of distribution area |
| |
| Environmental impact |
| |
| Economic damage |
| |
| Reproduction |
| |
| Growth |
| |
| Countermeasure |
| |
| Writer's name and affiliation |
| Mitsuo Horita, NIAES |
